1397240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2687}}^1$

素因数の和:2711

約数の個数: 32

約数和(自身を含む): 3386880

約数和(自身を除く): 1989640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2687, 5374, 10748, 13435, 21496, 26870, 34931, 53740, 69862, 107480, 139724, 174655, 279448, 349310, 698620, 1397240]

約数ペア:

[(1, 1397240), (2, 698620), (4, 349310), (5, 279448), (8, 174655), (10, 139724), (13, 107480), (20, 69862), (26, 53740), (40, 34931), (52, 26870), (65, 21496), (104, 13435), (130, 10748), (260, 5374), (520, 2687)]