20249980

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^2$

素因数の和:330

約数の個数: 36

約数和(自身を含む): 43578360

約数和(自身を除く): 23328380

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 131, 236, 262, 295, 524, 590, 655, 1180, 1310, 2620, 7729, 15458, 17161, 30916, 34322, 38645, 68644, 77290, 85805, 154580, 171610, 343220, 1012499, 2024998, 4049996, 5062495, 10124990, 20249980]

約数ペア:

[(1, 20249980), (2, 10124990), (4, 5062495), (5, 4049996), (10, 2024998), (20, 1012499), (59, 343220), (118, 171610), (131, 154580), (236, 85805), (262, 77290), (295, 68644), (524, 38645), (590, 34322), (655, 30916), (1180, 17161), (1310, 15458), (2620, 7729)]