621140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2389}}^1$

素因数の和:2411

約数の個数: 24

約数和(自身を含む): 1405320

約数和(自身を除く): 784180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2389, 4778, 9556, 11945, 23890, 31057, 47780, 62114, 124228, 155285, 310570, 621140]

約数ペア:

[(1, 621140), (2, 310570), (4, 155285), (5, 124228), (10, 62114), (13, 47780), (20, 31057), (26, 23890), (52, 11945), (65, 9556), (130, 4778), (260, 2389)]