640147191

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{569}}^1$

素因数の和:799

約数の個数: 32

約数和(自身を含む): 893030400

約数和(自身を除く): 252883209

約数列:

[1, 3, 47, 79, 101, 141, 237, 303, 569, 1707, 3713, 4747, 7979, 11139, 14241, 23937, 26743, 44951, 57469, 80229, 134853, 172407, 375013, 1125039, 2112697, 2701043, 4540051, 6338091, 8103129, 13620153, 213382397, 640147191]

約数ペア:

[(1, 640147191), (3, 213382397), (47, 13620153), (79, 8103129), (101, 6338091), (141, 4540051), (237, 2701043), (303, 2112697), (569, 1125039), (1707, 375013), (3713, 172407), (4747, 134853), (7979, 80229), (11139, 57469), (14241, 44951), (23937, 26743)]