31856445

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 60981336

約数和(自身を除く): 29124891

約数列:

[1, 3, 5, 9, 15, 19, 37, 45, 53, 57, 95, 111, 159, 171, 185, 265, 285, 333, 361, 477, 555, 703, 795, 855, 1007, 1083, 1665, 1805, 1961, 2109, 2385, 3021, 3249, 3515, 5035, 5415, 5883, 6327, 9063, 9805, 10545, 13357, 15105, 16245, 17649, 19133, 29415, 31635, 37259, 40071, 45315, 57399, 66785, 88245, 95665, 111777, 120213, 172197, 186295, 200355, 286995, 335331, 558885, 601065, 707921, 860985, 1676655, 2123763, 3539605, 6371289, 10618815, 31856445]

約数ペア:

[(1, 31856445), (3, 10618815), (5, 6371289), (9, 3539605), (15, 2123763), (19, 1676655), (37, 860985), (45, 707921), (53, 601065), (57, 558885), (95, 335331), (111, 286995), (159, 200355), (171, 186295), (185, 172197), (265, 120213), (285, 111777), (333, 95665), (361, 88245), (477, 66785), (555, 57399), (703, 45315), (795, 40071), (855, 37259), (1007, 31635), (1083, 29415), (1665, 19133), (1805, 17649), (1961, 16245), (2109, 15105), (2385, 13357), (3021, 10545), (3249, 9805), (3515, 9063), (5035, 6327), (5415, 5883)]