1391705980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{9940757}}^1$

素因数の和:9940773

約数の個数: 24

約数和(自身を含む): 3340094688

約数和(自身を除く): 1948388708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 9940757, 19881514, 39763028, 49703785, 69585299, 99407570, 139170598, 198815140, 278341196, 347926495, 695852990, 1391705980]

約数ペア:

[(1, 1391705980), (2, 695852990), (4, 347926495), (5, 278341196), (7, 198815140), (10, 139170598), (14, 99407570), (20, 69585299), (28, 49703785), (35, 39763028), (70, 19881514), (140, 9940757)]