654321490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2256281}}^1$

素因数の和:2256317

約数の個数: 16

約数和(自身を含む): 1218392280

約数和(自身を除く): 564070790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 2256281, 4512562, 11281405, 22562810, 65432149, 130864298, 327160745, 654321490]

約数ペア:

[(1, 654321490), (2, 327160745), (5, 130864298), (10, 65432149), (29, 22562810), (58, 11281405), (145, 4512562), (290, 2256281)]