78262020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3319}}^1$

素因数の和:3465

約数の個数: 72

約数和(自身を含む): 239279040

約数和(自身を除く): 161017020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 1179, 1310, 1572, 1965, 2358, 2620, 3319, 3930, 4716, 5895, 6638, 7860, 9957, 11790, 13276, 16595, 19914, 23580, 29871, 33190, 39828, 49785, 59742, 66380, 99570, 119484, 149355, 199140, 298710, 434789, 597420, 869578, 1304367, 1739156, 2173945, 2608734, 3913101, 4347890, 5217468, 6521835, 7826202, 8695780, 13043670, 15652404, 19565505, 26087340, 39131010, 78262020]

約数ペア:

[(1, 78262020), (2, 39131010), (3, 26087340), (4, 19565505), (5, 15652404), (6, 13043670), (9, 8695780), (10, 7826202), (12, 6521835), (15, 5217468), (18, 4347890), (20, 3913101), (30, 2608734), (36, 2173945), (45, 1739156), (60, 1304367), (90, 869578), (131, 597420), (180, 434789), (262, 298710), (393, 199140), (524, 149355), (655, 119484), (786, 99570), (1179, 66380), (1310, 59742), (1572, 49785), (1965, 39828), (2358, 33190), (2620, 29871), (3319, 23580), (3930, 19914), (4716, 16595), (5895, 13276), (6638, 11790), (7860, 9957)]