31309020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{619}}^1$

素因数の和:915

約数の個数: 72

約数和(自身を含む): 95462640

約数和(自身を除く): 64153620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 281, 562, 619, 843, 1124, 1238, 1405, 1686, 1857, 2476, 2529, 2810, 3095, 3372, 3714, 4215, 5058, 5571, 5620, 6190, 7428, 8430, 9285, 10116, 11142, 12380, 12645, 16860, 18570, 22284, 25290, 27855, 37140, 50580, 55710, 111420, 173939, 347878, 521817, 695756, 869695, 1043634, 1565451, 1739390, 2087268, 2609085, 3130902, 3478780, 5218170, 6261804, 7827255, 10436340, 15654510, 31309020]

約数ペア:

[(1, 31309020), (2, 15654510), (3, 10436340), (4, 7827255), (5, 6261804), (6, 5218170), (9, 3478780), (10, 3130902), (12, 2609085), (15, 2087268), (18, 1739390), (20, 1565451), (30, 1043634), (36, 869695), (45, 695756), (60, 521817), (90, 347878), (180, 173939), (281, 111420), (562, 55710), (619, 50580), (843, 37140), (1124, 27855), (1238, 25290), (1405, 22284), (1686, 18570), (1857, 16860), (2476, 12645), (2529, 12380), (2810, 11142), (3095, 10116), (3372, 9285), (3714, 8430), (4215, 7428), (5058, 6190), (5571, 5620)]