28244440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{677}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 73224000

約数和(自身を除く): 44979560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 677, 745, 1043, 1192, 1354, 1490, 2086, 2708, 2980, 3385, 4172, 4739, 5215, 5416, 5960, 6770, 8344, 9478, 10430, 13540, 18956, 20860, 23695, 27080, 37912, 41720, 47390, 94780, 100873, 189560, 201746, 403492, 504365, 706111, 806984, 1008730, 1412222, 2017460, 2824444, 3530555, 4034920, 5648888, 7061110, 14122220, 28244440]

約数ペア:

[(1, 28244440), (2, 14122220), (4, 7061110), (5, 5648888), (7, 4034920), (8, 3530555), (10, 2824444), (14, 2017460), (20, 1412222), (28, 1008730), (35, 806984), (40, 706111), (56, 504365), (70, 403492), (140, 201746), (149, 189560), (280, 100873), (298, 94780), (596, 47390), (677, 41720), (745, 37912), (1043, 27080), (1192, 23695), (1354, 20860), (1490, 18956), (2086, 13540), (2708, 10430), (2980, 9478), (3385, 8344), (4172, 6770), (4739, 5960), (5215, 5416)]