64640015

素因数分解:

$5^1\times {\mathrm{11}}^4\times {\mathrm{883}}^1$

素因数の和:932

約数の個数: 20

約数和(自身を含む): 85420920

約数和(自身を除く): 20780905

約数列:

[1, 5, 11, 55, 121, 605, 883, 1331, 4415, 6655, 9713, 14641, 48565, 73205, 106843, 534215, 1175273, 5876365, 12928003, 64640015]

約数ペア:

[(1, 64640015), (5, 12928003), (11, 5876365), (55, 1175273), (121, 534215), (605, 106843), (883, 73205), (1331, 48565), (4415, 14641), (6655, 9713)]