81351380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:401

約数の個数: 96

約数和(自身を含む): 198132480

約数和(自身を除く): 116781100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 41, 44, 55, 58, 82, 110, 116, 145, 164, 205, 220, 290, 311, 319, 410, 451, 580, 622, 638, 820, 902, 1189, 1244, 1276, 1555, 1595, 1804, 2255, 2378, 3110, 3190, 3421, 4510, 4756, 5945, 6220, 6380, 6842, 9019, 9020, 11890, 12751, 13079, 13684, 17105, 18038, 23780, 25502, 26158, 34210, 36076, 45095, 51004, 52316, 63755, 65395, 68420, 90190, 99209, 127510, 130790, 140261, 180380, 198418, 255020, 261580, 280522, 369779, 396836, 496045, 561044, 701305, 739558, 992090, 1402610, 1479116, 1848895, 1984180, 2805220, 3697790, 4067569, 7395580, 8135138, 16270276, 20337845, 40675690, 81351380]

約数ペア:

[(1, 81351380), (2, 40675690), (4, 20337845), (5, 16270276), (10, 8135138), (11, 7395580), (20, 4067569), (22, 3697790), (29, 2805220), (41, 1984180), (44, 1848895), (55, 1479116), (58, 1402610), (82, 992090), (110, 739558), (116, 701305), (145, 561044), (164, 496045), (205, 396836), (220, 369779), (290, 280522), (311, 261580), (319, 255020), (410, 198418), (451, 180380), (580, 140261), (622, 130790), (638, 127510), (820, 99209), (902, 90190), (1189, 68420), (1244, 65395), (1276, 63755), (1555, 52316), (1595, 51004), (1804, 45095), (2255, 36076), (2378, 34210), (3110, 26158), (3190, 25502), (3421, 23780), (4510, 18038), (4756, 17105), (5945, 13684), (6220, 13079), (6380, 12751), (6842, 11890), (9019, 9020)]