18991070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 41817600

約数和(自身を除く): 22826530

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 109, 131, 133, 190, 218, 262, 266, 545, 655, 665, 763, 917, 1090, 1310, 1330, 1526, 1834, 2071, 2489, 3815, 4142, 4585, 4978, 7630, 9170, 10355, 12445, 14279, 14497, 17423, 20710, 24890, 28558, 28994, 34846, 71395, 72485, 87115, 99953, 142790, 144970, 174230, 199906, 271301, 499765, 542602, 999530, 1356505, 1899107, 2713010, 3798214, 9495535, 18991070]

約数ペア:

[(1, 18991070), (2, 9495535), (5, 3798214), (7, 2713010), (10, 1899107), (14, 1356505), (19, 999530), (35, 542602), (38, 499765), (70, 271301), (95, 199906), (109, 174230), (131, 144970), (133, 142790), (190, 99953), (218, 87115), (262, 72485), (266, 71395), (545, 34846), (655, 28994), (665, 28558), (763, 24890), (917, 20710), (1090, 17423), (1310, 14497), (1330, 14279), (1526, 12445), (1834, 10355), (2071, 9170), (2489, 7630), (3815, 4978), (4142, 4585)]