21856860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3917}}^1$

素因数の和:3963

約数の個数: 72

約数和(自身を含む): 68455296

約数和(自身を除く): 46598436

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3917, 5580, 7834, 11751, 15668, 19585, 23502, 35253, 39170, 47004, 58755, 70506, 78340, 117510, 121427, 141012, 176265, 235020, 242854, 352530, 364281, 485708, 607135, 705060, 728562, 1092843, 1214270, 1457124, 1821405, 2185686, 2428540, 3642810, 4371372, 5464215, 7285620, 10928430, 21856860]

約数ペア:

[(1, 21856860), (2, 10928430), (3, 7285620), (4, 5464215), (5, 4371372), (6, 3642810), (9, 2428540), (10, 2185686), (12, 1821405), (15, 1457124), (18, 1214270), (20, 1092843), (30, 728562), (31, 705060), (36, 607135), (45, 485708), (60, 364281), (62, 352530), (90, 242854), (93, 235020), (124, 176265), (155, 141012), (180, 121427), (186, 117510), (279, 78340), (310, 70506), (372, 58755), (465, 47004), (558, 39170), (620, 35253), (930, 23502), (1116, 19585), (1395, 15668), (1860, 11751), (2790, 7834), (3917, 5580)]