20989934

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 39817008

約数和(自身を除く): 18827074

約数列:

[1, 2, 7, 14, 17, 34, 43, 49, 86, 98, 119, 238, 293, 301, 586, 602, 731, 833, 1462, 1666, 2051, 2107, 4102, 4214, 4981, 5117, 9962, 10234, 12599, 14357, 25198, 28714, 34867, 35819, 69734, 71638, 88193, 176386, 214183, 244069, 428366, 488138, 617351, 1234702, 1499281, 2998562, 10494967, 20989934]

約数ペア:

[(1, 20989934), (2, 10494967), (7, 2998562), (14, 1499281), (17, 1234702), (34, 617351), (43, 488138), (49, 428366), (86, 244069), (98, 214183), (119, 176386), (238, 88193), (293, 71638), (301, 69734), (586, 35819), (602, 34867), (731, 28714), (833, 25198), (1462, 14357), (1666, 12599), (2051, 10234), (2107, 9962), (4102, 5117), (4214, 4981)]