781004080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{7681}}^1$

素因数の和:7766

約数の個数: 80

約数和(自身を含む): 1920377088

約数和(自身を除く): 1139373008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 1240, 1271, 1640, 2480, 2542, 3280, 5084, 6355, 7681, 10168, 12710, 15362, 20336, 25420, 30724, 38405, 50840, 61448, 76810, 101680, 122896, 153620, 238111, 307240, 314921, 476222, 614480, 629842, 952444, 1190555, 1259684, 1574605, 1904888, 2381110, 2519368, 3149210, 3809776, 4762220, 5038736, 6298420, 9524440, 9762551, 12596840, 19048880, 19525102, 25193680, 39050204, 48812755, 78100408, 97625510, 156200816, 195251020, 390502040, 781004080]

約数ペア:

[(1, 781004080), (2, 390502040), (4, 195251020), (5, 156200816), (8, 97625510), (10, 78100408), (16, 48812755), (20, 39050204), (31, 25193680), (40, 19525102), (41, 19048880), (62, 12596840), (80, 9762551), (82, 9524440), (124, 6298420), (155, 5038736), (164, 4762220), (205, 3809776), (248, 3149210), (310, 2519368), (328, 2381110), (410, 1904888), (496, 1574605), (620, 1259684), (656, 1190555), (820, 952444), (1240, 629842), (1271, 614480), (1640, 476222), (2480, 314921), (2542, 307240), (3280, 238111), (5084, 153620), (6355, 122896), (7681, 101680), (10168, 76810), (12710, 61448), (15362, 50840), (20336, 38405), (25420, 30724)]