78221920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{331}}^1$

素因数の和:564

約数の個数: 96

約数和(自身を含む): 212841216

約数和(自身を除く): 134619296

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 211, 224, 280, 331, 422, 560, 662, 844, 1055, 1120, 1324, 1477, 1655, 1688, 2110, 2317, 2648, 2954, 3310, 3376, 4220, 4634, 5296, 5908, 6620, 6752, 7385, 8440, 9268, 10592, 11585, 11816, 13240, 14770, 16880, 18536, 23170, 23632, 26480, 29540, 33760, 37072, 46340, 47264, 52960, 59080, 69841, 74144, 92680, 118160, 139682, 185360, 236320, 279364, 349205, 370720, 488887, 558728, 698410, 977774, 1117456, 1396820, 1955548, 2234912, 2444435, 2793640, 3911096, 4888870, 5587280, 7822192, 9777740, 11174560, 15644384, 19555480, 39110960, 78221920]

約数ペア:

[(1, 78221920), (2, 39110960), (4, 19555480), (5, 15644384), (7, 11174560), (8, 9777740), (10, 7822192), (14, 5587280), (16, 4888870), (20, 3911096), (28, 2793640), (32, 2444435), (35, 2234912), (40, 1955548), (56, 1396820), (70, 1117456), (80, 977774), (112, 698410), (140, 558728), (160, 488887), (211, 370720), (224, 349205), (280, 279364), (331, 236320), (422, 185360), (560, 139682), (662, 118160), (844, 92680), (1055, 74144), (1120, 69841), (1324, 59080), (1477, 52960), (1655, 47264), (1688, 46340), (2110, 37072), (2317, 33760), (2648, 29540), (2954, 26480), (3310, 23632), (3376, 23170), (4220, 18536), (4634, 16880), (5296, 14770), (5908, 13240), (6620, 11816), (6752, 11585), (7385, 10592), (8440, 9268)]