64916020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249677}}^1$

素因数の和:249699

約数の個数: 24

約数和(自身を含む): 146810664

約数和(自身を除く): 81894644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249677, 499354, 998708, 1248385, 2496770, 3245801, 4993540, 6491602, 12983204, 16229005, 32458010, 64916020]

約数ペア:

[(1, 64916020), (2, 32458010), (4, 16229005), (5, 12983204), (10, 6491602), (13, 4993540), (20, 3245801), (26, 2496770), (52, 1248385), (65, 998708), (130, 499354), (260, 249677)]