1290972680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{4051}}^1$

素因数の和:4350

約数の個数: 64

約数和(自身を含む): 3010798080

約数和(自身を除く): 1719825400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 257, 310, 514, 620, 1028, 1240, 1285, 2056, 2570, 4051, 5140, 7967, 8102, 10280, 15934, 16204, 20255, 31868, 32408, 39835, 40510, 63736, 79670, 81020, 125581, 159340, 162040, 251162, 318680, 502324, 627905, 1004648, 1041107, 1255810, 2082214, 2511620, 4164428, 5023240, 5205535, 8328856, 10411070, 20822140, 32274317, 41644280, 64548634, 129097268, 161371585, 258194536, 322743170, 645486340, 1290972680]

約数ペア:

[(1, 1290972680), (2, 645486340), (4, 322743170), (5, 258194536), (8, 161371585), (10, 129097268), (20, 64548634), (31, 41644280), (40, 32274317), (62, 20822140), (124, 10411070), (155, 8328856), (248, 5205535), (257, 5023240), (310, 4164428), (514, 2511620), (620, 2082214), (1028, 1255810), (1240, 1041107), (1285, 1004648), (2056, 627905), (2570, 502324), (4051, 318680), (5140, 251162), (7967, 162040), (8102, 159340), (10280, 125581), (15934, 81020), (16204, 79670), (20255, 63736), (31868, 40510), (32408, 39835)]