31474820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{7121}}^1$

素因数の和:7160

約数の個数: 48

約数和(自身を含む): 75379248

約数和(自身を除く): 43904428

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 7121, 14242, 28484, 35605, 71210, 92573, 121057, 142420, 185146, 242114, 370292, 462865, 484228, 605285, 925730, 1210570, 1573741, 1851460, 2421140, 3147482, 6294964, 7868705, 15737410, 31474820]

約数ペア:

[(1, 31474820), (2, 15737410), (4, 7868705), (5, 6294964), (10, 3147482), (13, 2421140), (17, 1851460), (20, 1573741), (26, 1210570), (34, 925730), (52, 605285), (65, 484228), (68, 462865), (85, 370292), (130, 242114), (170, 185146), (221, 142420), (260, 121057), (340, 92573), (442, 71210), (884, 35605), (1105, 28484), (2210, 14242), (4420, 7121)]