17969980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2731}}^1$

素因数の和:2794

約数の個数: 48

約数和(自身を含む): 44061696

約数和(自身を除く): 26091716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 2731, 3290, 5462, 6580, 10924, 13655, 19117, 27310, 38234, 54620, 76468, 95585, 128357, 191170, 256714, 382340, 513428, 641785, 898499, 1283570, 1796998, 2567140, 3593996, 4492495, 8984990, 17969980]

約数ペア:

[(1, 17969980), (2, 8984990), (4, 4492495), (5, 3593996), (7, 2567140), (10, 1796998), (14, 1283570), (20, 898499), (28, 641785), (35, 513428), (47, 382340), (70, 256714), (94, 191170), (140, 128357), (188, 95585), (235, 76468), (329, 54620), (470, 38234), (658, 27310), (940, 19117), (1316, 13655), (1645, 10924), (2731, 6580), (3290, 5462)]