89988920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{577}}^1$

素因数の和:1152

約数の個数: 64

約数和(自身を含む): 232217280

約数和(自身を除く): 142228360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 557, 577, 1114, 1154, 2228, 2308, 2785, 2885, 3899, 4039, 4456, 4616, 5570, 5770, 7798, 8078, 11140, 11540, 15596, 16156, 19495, 20195, 22280, 23080, 31192, 32312, 38990, 40390, 77980, 80780, 155960, 161560, 321389, 642778, 1285556, 1606945, 2249723, 2571112, 3213890, 4499446, 6427780, 8998892, 11248615, 12855560, 17997784, 22497230, 44994460, 89988920]

約数ペア:

[(1, 89988920), (2, 44994460), (4, 22497230), (5, 17997784), (7, 12855560), (8, 11248615), (10, 8998892), (14, 6427780), (20, 4499446), (28, 3213890), (35, 2571112), (40, 2249723), (56, 1606945), (70, 1285556), (140, 642778), (280, 321389), (557, 161560), (577, 155960), (1114, 80780), (1154, 77980), (2228, 40390), (2308, 38990), (2785, 32312), (2885, 31192), (3899, 23080), (4039, 22280), (4456, 20195), (4616, 19495), (5570, 16156), (5770, 15596), (7798, 11540), (8078, 11140)]