81469620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1031}}^1$

素因数の和:1485

約数の個数: 72

約数和(自身を含む): 247927680

約数和(自身を除く): 166458060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 1031, 1317, 1756, 2062, 2195, 2634, 3093, 3951, 4124, 4390, 5155, 5268, 6186, 6585, 7902, 8780, 9279, 10310, 12372, 13170, 15465, 15804, 18558, 19755, 20620, 26340, 30930, 37116, 39510, 46395, 61860, 79020, 92790, 185580, 452609, 905218, 1357827, 1810436, 2263045, 2715654, 4073481, 4526090, 5431308, 6789135, 8146962, 9052180, 13578270, 16293924, 20367405, 27156540, 40734810, 81469620]

約数ペア:

[(1, 81469620), (2, 40734810), (3, 27156540), (4, 20367405), (5, 16293924), (6, 13578270), (9, 9052180), (10, 8146962), (12, 6789135), (15, 5431308), (18, 4526090), (20, 4073481), (30, 2715654), (36, 2263045), (45, 1810436), (60, 1357827), (90, 905218), (180, 452609), (439, 185580), (878, 92790), (1031, 79020), (1317, 61860), (1756, 46395), (2062, 39510), (2195, 37116), (2634, 30930), (3093, 26340), (3951, 20620), (4124, 19755), (4390, 18558), (5155, 15804), (5268, 15465), (6186, 13170), (6585, 12372), (7902, 10310), (8780, 9279)]