639656872

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{575231}}^1$

素因数の和:575376

約数の個数: 16

約数和(自身を含む): 1207987200

約数和(自身を除く): 568330328

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 575231, 1150462, 2300924, 4601848, 79957109, 159914218, 319828436, 639656872]

約数ペア:

[(1, 639656872), (2, 319828436), (4, 159914218), (8, 79957109), (139, 4601848), (278, 2300924), (556, 1150462), (1112, 575231)]