21388680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:148

約数の個数: 192

約数和(自身を含む): 75816000

約数和(自身を除く): 54427320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 53, 57, 59, 60, 72, 76, 90, 95, 106, 114, 118, 120, 152, 159, 171, 177, 180, 190, 212, 228, 236, 265, 285, 295, 318, 342, 354, 360, 380, 424, 456, 472, 477, 530, 531, 570, 590, 636, 684, 708, 760, 795, 855, 885, 954, 1007, 1060, 1062, 1121, 1140, 1180, 1272, 1368, 1416, 1590, 1710, 1770, 1908, 2014, 2120, 2124, 2242, 2280, 2360, 2385, 2655, 3021, 3127, 3180, 3363, 3420, 3540, 3816, 4028, 4248, 4484, 4770, 5035, 5310, 5605, 6042, 6254, 6360, 6726, 6840, 7080, 8056, 8968, 9063, 9381, 9540, 10070, 10089, 10620, 11210, 12084, 12508, 13452, 15105, 15635, 16815, 18126, 18762, 19080, 20140, 20178, 21240, 22420, 24168, 25016, 26904, 28143, 30210, 31270, 33630, 36252, 37524, 40280, 40356, 44840, 45315, 46905, 50445, 56286, 59413, 60420, 62540, 67260, 72504, 75048, 80712, 90630, 93810, 100890, 112572, 118826, 120840, 125080, 134520, 140715, 178239, 181260, 187620, 201780, 225144, 237652, 281430, 297065, 356478, 362520, 375240, 403560, 475304, 534717, 562860, 594130, 712956, 891195, 1069434, 1125720, 1188260, 1425912, 1782390, 2138868, 2376520, 2673585, 3564780, 4277736, 5347170, 7129560, 10694340, 21388680]

約数ペア:

[(1, 21388680), (2, 10694340), (3, 7129560), (4, 5347170), (5, 4277736), (6, 3564780), (8, 2673585), (9, 2376520), (10, 2138868), (12, 1782390), (15, 1425912), (18, 1188260), (19, 1125720), (20, 1069434), (24, 891195), (30, 712956), (36, 594130), (38, 562860), (40, 534717), (45, 475304), (53, 403560), (57, 375240), (59, 362520), (60, 356478), (72, 297065), (76, 281430), (90, 237652), (95, 225144), (106, 201780), (114, 187620), (118, 181260), (120, 178239), (152, 140715), (159, 134520), (171, 125080), (177, 120840), (180, 118826), (190, 112572), (212, 100890), (228, 93810), (236, 90630), (265, 80712), (285, 75048), (295, 72504), (318, 67260), (342, 62540), (354, 60420), (360, 59413), (380, 56286), (424, 50445), (456, 46905), (472, 45315), (477, 44840), (530, 40356), (531, 40280), (570, 37524), (590, 36252), (636, 33630), (684, 31270), (708, 30210), (760, 28143), (795, 26904), (855, 25016), (885, 24168), (954, 22420), (1007, 21240), (1060, 20178), (1062, 20140), (1121, 19080), (1140, 18762), (1180, 18126), (1272, 16815), (1368, 15635), (1416, 15105), (1590, 13452), (1710, 12508), (1770, 12084), (1908, 11210), (2014, 10620), (2120, 10089), (2124, 10070), (2242, 9540), (2280, 9381), (2360, 9063), (2385, 8968), (2655, 8056), (3021, 7080), (3127, 6840), (3180, 6726), (3363, 6360), (3420, 6254), (3540, 6042), (3816, 5605), (4028, 5310), (4248, 5035), (4484, 4770)]