21342140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1531}}^1$

素因数の和:1598

約数の個数: 48

約数和(自身を含む): 48644064

約数和(自身を除く): 27301924

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1531, 2788, 3062, 3485, 6124, 6970, 7655, 13940, 15310, 26027, 30620, 52054, 62771, 104108, 125542, 130135, 251084, 260270, 313855, 520540, 627710, 1067107, 1255420, 2134214, 4268428, 5335535, 10671070, 21342140]

約数ペア:

[(1, 21342140), (2, 10671070), (4, 5335535), (5, 4268428), (10, 2134214), (17, 1255420), (20, 1067107), (34, 627710), (41, 520540), (68, 313855), (82, 260270), (85, 251084), (164, 130135), (170, 125542), (205, 104108), (340, 62771), (410, 52054), (697, 30620), (820, 26027), (1394, 15310), (1531, 13940), (2788, 7655), (3062, 6970), (3485, 6124)]