25715678680

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:797

約数の個数: 128

約数和(自身を含む): 59618592000

約数和(自身を除く): 33902913320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 101, 158, 197, 202, 316, 394, 395, 404, 409, 505, 632, 788, 790, 808, 818, 985, 1010, 1576, 1580, 1636, 1970, 2020, 2045, 3160, 3272, 3940, 4040, 4090, 7880, 7979, 8180, 15563, 15958, 16360, 19897, 31126, 31916, 32311, 39794, 39895, 41309, 62252, 63832, 64622, 77815, 79588, 79790, 80573, 82618, 99485, 124504, 129244, 155630, 159176, 159580, 161146, 161555, 165236, 198970, 206545, 258488, 311260, 319160, 322292, 323110, 330472, 397940, 402865, 413090, 622520, 644584, 646220, 795880, 805730, 826180, 1292440, 1571863, 1611460, 1652360, 3143726, 3222920, 3263411, 6287452, 6365267, 6526822, 7859315, 8137873, 12574904, 12730534, 13053644, 15718630, 16275746, 16317055, 25461068, 26107288, 31437260, 31826335, 32551492, 32634110, 40689365, 50922136, 62874520, 63652670, 65102984, 65268220, 81378730, 127305340, 130536440, 162757460, 254610680, 325514920, 642891967, 1285783934, 2571567868, 3214459835, 5143135736, 6428919670, 12857839340, 25715678680]

約数ペア:

[(1, 25715678680), (2, 12857839340), (4, 6428919670), (5, 5143135736), (8, 3214459835), (10, 2571567868), (20, 1285783934), (40, 642891967), (79, 325514920), (101, 254610680), (158, 162757460), (197, 130536440), (202, 127305340), (316, 81378730), (394, 65268220), (395, 65102984), (404, 63652670), (409, 62874520), (505, 50922136), (632, 40689365), (788, 32634110), (790, 32551492), (808, 31826335), (818, 31437260), (985, 26107288), (1010, 25461068), (1576, 16317055), (1580, 16275746), (1636, 15718630), (1970, 13053644), (2020, 12730534), (2045, 12574904), (3160, 8137873), (3272, 7859315), (3940, 6526822), (4040, 6365267), (4090, 6287452), (7880, 3263411), (7979, 3222920), (8180, 3143726), (15563, 1652360), (15958, 1611460), (16360, 1571863), (19897, 1292440), (31126, 826180), (31916, 805730), (32311, 795880), (39794, 646220), (39895, 644584), (41309, 622520), (62252, 413090), (63832, 402865), (64622, 397940), (77815, 330472), (79588, 323110), (79790, 322292), (80573, 319160), (82618, 311260), (99485, 258488), (124504, 206545), (129244, 198970), (155630, 165236), (159176, 161555), (159580, 161146)]