639804535

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1\times {\mathrm{2243}}^1$

素因数の和:2978

約数の個数: 16

約数和(自身を含む): 777949920

約数和(自身を除く): 138145385

約数列:

[1, 5, 89, 445, 641, 2243, 3205, 11215, 57049, 199627, 285245, 998135, 1437763, 7188815, 127960907, 639804535]

約数ペア:

[(1, 639804535), (5, 127960907), (89, 7188815), (445, 1437763), (641, 998135), (2243, 285245), (3205, 199627), (11215, 57049)]