640038674

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1\times {\mathrm{2749}}^1$

素因数の和:3338

約数の個数: 32

約数和(自身を含む): 1104840000

約数和(自身を除く): 464801326

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 557, 1114, 2749, 5498, 6127, 10583, 12254, 21166, 30239, 52231, 60478, 104462, 116413, 232826, 574541, 1149082, 1531193, 3062386, 16843123, 29092667, 33686246, 58185334, 320019337, 640038674]

約数ペア:

[(1, 640038674), (2, 320019337), (11, 58185334), (19, 33686246), (22, 29092667), (38, 16843123), (209, 3062386), (418, 1531193), (557, 1149082), (1114, 574541), (2749, 232826), (5498, 116413), (6127, 104462), (10583, 60478), (12254, 52231), (21166, 30239)]