31898620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1553}}^1$

素因数の和:1654

約数の個数: 48

約数和(自身を含む): 73100160

約数和(自身を除く): 41201540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1553, 1580, 2054, 3106, 4108, 5135, 6212, 7765, 10270, 15530, 20189, 20540, 31060, 40378, 80756, 100945, 122687, 201890, 245374, 403780, 490748, 613435, 1226870, 1594931, 2453740, 3189862, 6379724, 7974655, 15949310, 31898620]

約数ペア:

[(1, 31898620), (2, 15949310), (4, 7974655), (5, 6379724), (10, 3189862), (13, 2453740), (20, 1594931), (26, 1226870), (52, 613435), (65, 490748), (79, 403780), (130, 245374), (158, 201890), (260, 122687), (316, 100945), (395, 80756), (790, 40378), (1027, 31060), (1553, 20540), (1580, 20189), (2054, 15530), (3106, 10270), (4108, 7765), (5135, 6212)]