25481720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1997}}^1$

素因数の和:2048

約数の個数: 64

約数和(自身を含む): 64735200

約数和(自身を除く): 39253480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 1997, 2552, 3190, 3994, 6380, 7988, 9985, 12760, 15976, 19970, 21967, 39940, 43934, 57913, 79880, 87868, 109835, 115826, 175736, 219670, 231652, 289565, 439340, 463304, 579130, 637043, 878680, 1158260, 1274086, 2316520, 2548172, 3185215, 5096344, 6370430, 12740860, 25481720]

約数ペア:

[(1, 25481720), (2, 12740860), (4, 6370430), (5, 5096344), (8, 3185215), (10, 2548172), (11, 2316520), (20, 1274086), (22, 1158260), (29, 878680), (40, 637043), (44, 579130), (55, 463304), (58, 439340), (88, 289565), (110, 231652), (116, 219670), (145, 175736), (220, 115826), (232, 109835), (290, 87868), (319, 79880), (440, 57913), (580, 43934), (638, 39940), (1160, 21967), (1276, 19970), (1595, 15976), (1997, 12760), (2552, 9985), (3190, 7988), (3994, 6380)]