64721810

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{64081}}^1$

素因数の和:64189

約数の個数: 16

約数和(自身を含む): 117654552

約数和(自身を除く): 52932742

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 64081, 128162, 320405, 640810, 6472181, 12944362, 32360905, 64721810]

約数ペア:

[(1, 64721810), (2, 32360905), (5, 12944362), (10, 6472181), (101, 640810), (202, 320405), (505, 128162), (1010, 64081)]