20605550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{521}}^1$

素因数の和:653

約数の個数: 48

約数和(自身を含む): 44273952

約数和(自身を除く): 23668402

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 113, 175, 226, 350, 521, 565, 791, 1042, 1130, 1582, 2605, 2825, 3647, 3955, 5210, 5650, 7294, 7910, 13025, 18235, 19775, 26050, 36470, 39550, 58873, 91175, 117746, 182350, 294365, 412111, 588730, 824222, 1471825, 2060555, 2943650, 4121110, 10302775, 20605550]

約数ペア:

[(1, 20605550), (2, 10302775), (5, 4121110), (7, 2943650), (10, 2060555), (14, 1471825), (25, 824222), (35, 588730), (50, 412111), (70, 294365), (113, 182350), (175, 117746), (226, 91175), (350, 58873), (521, 39550), (565, 36470), (791, 26050), (1042, 19775), (1130, 18235), (1582, 13025), (2605, 7910), (2825, 7294), (3647, 5650), (3955, 5210)]