64247980

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{13441}}^1$

素因数の和:13689

約数の個数: 24

約数和(自身を含む): 135495360

約数和(自身を除く): 71247380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 13441, 26882, 53764, 67205, 134410, 268820, 3212399, 6424798, 12849596, 16061995, 32123990, 64247980]

約数ペア:

[(1, 64247980), (2, 32123990), (4, 16061995), (5, 12849596), (10, 6424798), (20, 3212399), (239, 268820), (478, 134410), (956, 67205), (1195, 53764), (2390, 26882), (4780, 13441)]