513620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 1098888

約数和(自身を除く): 585268

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 421, 610, 842, 1220, 1684, 2105, 4210, 8420, 25681, 51362, 102724, 128405, 256810, 513620]

約数ペア:

[(1, 513620), (2, 256810), (4, 128405), (5, 102724), (10, 51362), (20, 25681), (61, 8420), (122, 4210), (244, 2105), (305, 1684), (421, 1220), (610, 842)]