81578700

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{563}}^1$

素因数の和:613

約数の個数: 216

約数和(自身を含む): 305480448

約数和(自身を除く): 223901748

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 25, 28, 30, 35, 36, 42, 45, 46, 50, 60, 63, 69, 70, 75, 84, 90, 92, 100, 105, 115, 126, 138, 140, 150, 161, 175, 180, 207, 210, 225, 230, 252, 276, 300, 315, 322, 345, 350, 414, 420, 450, 460, 483, 525, 563, 575, 630, 644, 690, 700, 805, 828, 900, 966, 1035, 1050, 1126, 1150, 1260, 1380, 1449, 1575, 1610, 1689, 1725, 1932, 2070, 2100, 2252, 2300, 2415, 2815, 2898, 3150, 3220, 3378, 3450, 3941, 4025, 4140, 4830, 5067, 5175, 5630, 5796, 6300, 6756, 6900, 7245, 7882, 8050, 8445, 9660, 10134, 10350, 11260, 11823, 12075, 12949, 14075, 14490, 15764, 16100, 16890, 19705, 20268, 20700, 23646, 24150, 25335, 25898, 28150, 28980, 33780, 35469, 36225, 38847, 39410, 42225, 47292, 48300, 50670, 51796, 56300, 59115, 64745, 70938, 72450, 77694, 78820, 84450, 90643, 98525, 101340, 116541, 118230, 126675, 129490, 141876, 144900, 155388, 168900, 177345, 181286, 194235, 197050, 233082, 236460, 253350, 258980, 271929, 295575, 323725, 354690, 362572, 388470, 394100, 453215, 466164, 506700, 543858, 582705, 591150, 647450, 709380, 776940, 815787, 886725, 906430, 971175, 1087716, 1165410, 1182300, 1294900, 1359645, 1631574, 1773450, 1812860, 1942350, 2266075, 2330820, 2719290, 2913525, 3263148, 3546900, 3884700, 4078935, 4532150, 5438580, 5827050, 6798225, 8157870, 9064300, 11654100, 13596450, 16315740, 20394675, 27192900, 40789350, 81578700]

約数ペア:

[(1, 81578700), (2, 40789350), (3, 27192900), (4, 20394675), (5, 16315740), (6, 13596450), (7, 11654100), (9, 9064300), (10, 8157870), (12, 6798225), (14, 5827050), (15, 5438580), (18, 4532150), (20, 4078935), (21, 3884700), (23, 3546900), (25, 3263148), (28, 2913525), (30, 2719290), (35, 2330820), (36, 2266075), (42, 1942350), (45, 1812860), (46, 1773450), (50, 1631574), (60, 1359645), (63, 1294900), (69, 1182300), (70, 1165410), (75, 1087716), (84, 971175), (90, 906430), (92, 886725), (100, 815787), (105, 776940), (115, 709380), (126, 647450), (138, 591150), (140, 582705), (150, 543858), (161, 506700), (175, 466164), (180, 453215), (207, 394100), (210, 388470), (225, 362572), (230, 354690), (252, 323725), (276, 295575), (300, 271929), (315, 258980), (322, 253350), (345, 236460), (350, 233082), (414, 197050), (420, 194235), (450, 181286), (460, 177345), (483, 168900), (525, 155388), (563, 144900), (575, 141876), (630, 129490), (644, 126675), (690, 118230), (700, 116541), (805, 101340), (828, 98525), (900, 90643), (966, 84450), (1035, 78820), (1050, 77694), (1126, 72450), (1150, 70938), (1260, 64745), (1380, 59115), (1449, 56300), (1575, 51796), (1610, 50670), (1689, 48300), (1725, 47292), (1932, 42225), (2070, 39410), (2100, 38847), (2252, 36225), (2300, 35469), (2415, 33780), (2815, 28980), (2898, 28150), (3150, 25898), (3220, 25335), (3378, 24150), (3450, 23646), (3941, 20700), (4025, 20268), (4140, 19705), (4830, 16890), (5067, 16100), (5175, 15764), (5630, 14490), (5796, 14075), (6300, 12949), (6756, 12075), (6900, 11823), (7245, 11260), (7882, 10350), (8050, 10134), (8445, 9660)]