640881360

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1259}}^1$

素因数の和:1386

約数の個数: 240

約数和(自身を含む): 2486090880

約数和(自身を除く): 1845209520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 101, 105, 112, 120, 126, 140, 144, 168, 180, 202, 210, 240, 252, 280, 303, 315, 336, 360, 404, 420, 504, 505, 560, 606, 630, 707, 720, 808, 840, 909, 1008, 1010, 1212, 1259, 1260, 1414, 1515, 1616, 1680, 1818, 2020, 2121, 2424, 2518, 2520, 2828, 3030, 3535, 3636, 3777, 4040, 4242, 4545, 4848, 5036, 5040, 5656, 6060, 6295, 6363, 7070, 7272, 7554, 8080, 8484, 8813, 9090, 10072, 10605, 11312, 11331, 12120, 12590, 12726, 14140, 14544, 15108, 16968, 17626, 18180, 18885, 20144, 21210, 22662, 24240, 25180, 25452, 26439, 28280, 30216, 31815, 33936, 35252, 36360, 37770, 42420, 44065, 45324, 50360, 50904, 52878, 56560, 56655, 60432, 63630, 70504, 72720, 75540, 79317, 84840, 88130, 90648, 100720, 101808, 105756, 113310, 127159, 127260, 132195, 141008, 151080, 158634, 169680, 176260, 181296, 211512, 226620, 254318, 254520, 264390, 302160, 317268, 352520, 381477, 396585, 423024, 453240, 508636, 509040, 528780, 634536, 635795, 705040, 762954, 793170, 890113, 906480, 1017272, 1057560, 1144431, 1269072, 1271590, 1525908, 1586340, 1780226, 1907385, 2034544, 2115120, 2288862, 2543180, 2670339, 3051816, 3172680, 3560452, 3814770, 4450565, 4577724, 5086360, 5340678, 5722155, 6103632, 6345360, 7120904, 7629540, 8011017, 8901130, 9155448, 10172720, 10681356, 11444310, 13351695, 14241808, 15259080, 16022034, 17802260, 18310896, 21362712, 22888620, 26703390, 30518160, 32044068, 35604520, 40055085, 42725424, 45777240, 53406780, 64088136, 71209040, 80110170, 91554480, 106813560, 128176272, 160220340, 213627120, 320440680, 640881360]

約数ペア:

[(1, 640881360), (2, 320440680), (3, 213627120), (4, 160220340), (5, 128176272), (6, 106813560), (7, 91554480), (8, 80110170), (9, 71209040), (10, 64088136), (12, 53406780), (14, 45777240), (15, 42725424), (16, 40055085), (18, 35604520), (20, 32044068), (21, 30518160), (24, 26703390), (28, 22888620), (30, 21362712), (35, 18310896), (36, 17802260), (40, 16022034), (42, 15259080), (45, 14241808), (48, 13351695), (56, 11444310), (60, 10681356), (63, 10172720), (70, 9155448), (72, 8901130), (80, 8011017), (84, 7629540), (90, 7120904), (101, 6345360), (105, 6103632), (112, 5722155), (120, 5340678), (126, 5086360), (140, 4577724), (144, 4450565), (168, 3814770), (180, 3560452), (202, 3172680), (210, 3051816), (240, 2670339), (252, 2543180), (280, 2288862), (303, 2115120), (315, 2034544), (336, 1907385), (360, 1780226), (404, 1586340), (420, 1525908), (504, 1271590), (505, 1269072), (560, 1144431), (606, 1057560), (630, 1017272), (707, 906480), (720, 890113), (808, 793170), (840, 762954), (909, 705040), (1008, 635795), (1010, 634536), (1212, 528780), (1259, 509040), (1260, 508636), (1414, 453240), (1515, 423024), (1616, 396585), (1680, 381477), (1818, 352520), (2020, 317268), (2121, 302160), (2424, 264390), (2518, 254520), (2520, 254318), (2828, 226620), (3030, 211512), (3535, 181296), (3636, 176260), (3777, 169680), (4040, 158634), (4242, 151080), (4545, 141008), (4848, 132195), (5036, 127260), (5040, 127159), (5656, 113310), (6060, 105756), (6295, 101808), (6363, 100720), (7070, 90648), (7272, 88130), (7554, 84840), (8080, 79317), (8484, 75540), (8813, 72720), (9090, 70504), (10072, 63630), (10605, 60432), (11312, 56655), (11331, 56560), (12120, 52878), (12590, 50904), (12726, 50360), (14140, 45324), (14544, 44065), (15108, 42420), (16968, 37770), (17626, 36360), (18180, 35252), (18885, 33936), (20144, 31815), (21210, 30216), (22662, 28280), (24240, 26439), (25180, 25452)]