78974740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{303749}}^1$

素因数の和:303771

約数の個数: 24

約数和(自身を含む): 178605000

約数和(自身を除く): 99630260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 303749, 607498, 1214996, 1518745, 3037490, 3948737, 6074980, 7897474, 15794948, 19743685, 39487370, 78974740]

約数ペア:

[(1, 78974740), (2, 39487370), (4, 19743685), (5, 15794948), (10, 7897474), (13, 6074980), (20, 3948737), (26, 3037490), (52, 1518745), (65, 1214996), (130, 607498), (260, 303749)]