2011979920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{77863}}^1$

素因数の和:77912

約数の個数: 80

約数和(自身を含む): 5213773440

約数和(自身を除く): 3201793520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 3230, 5168, 6460, 12920, 25840, 77863, 155726, 311452, 389315, 622904, 778630, 1245808, 1323671, 1479397, 1557260, 2647342, 2958794, 3114520, 5294684, 5917588, 6229040, 6618355, 7396985, 10589368, 11835176, 13236710, 14793970, 21178736, 23670352, 25149749, 26473420, 29587940, 50299498, 52946840, 59175880, 100598996, 105893680, 118351760, 125748745, 201197992, 251497490, 402395984, 502994980, 1005989960, 2011979920]

約数ペア:

[(1, 2011979920), (2, 1005989960), (4, 502994980), (5, 402395984), (8, 251497490), (10, 201197992), (16, 125748745), (17, 118351760), (19, 105893680), (20, 100598996), (34, 59175880), (38, 52946840), (40, 50299498), (68, 29587940), (76, 26473420), (80, 25149749), (85, 23670352), (95, 21178736), (136, 14793970), (152, 13236710), (170, 11835176), (190, 10589368), (272, 7396985), (304, 6618355), (323, 6229040), (340, 5917588), (380, 5294684), (646, 3114520), (680, 2958794), (760, 2647342), (1292, 1557260), (1360, 1479397), (1520, 1323671), (1615, 1245808), (2584, 778630), (3230, 622904), (5168, 389315), (6460, 311452), (12920, 155726), (25840, 77863)]