7938980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{8101}}^1$

素因数の和:8124

約数の個数: 36

約数和(自身を含む): 19396188

約数和(自身を除く): 11457208

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 8101, 16202, 32404, 40505, 56707, 81010, 113414, 162020, 226828, 283535, 396949, 567070, 793898, 1134140, 1587796, 1984745, 3969490, 7938980]

約数ペア:

[(1, 7938980), (2, 3969490), (4, 1984745), (5, 1587796), (7, 1134140), (10, 793898), (14, 567070), (20, 396949), (28, 283535), (35, 226828), (49, 162020), (70, 113414), (98, 81010), (140, 56707), (196, 40505), (245, 32404), (490, 16202), (980, 8101)]