20999701980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12962779}}^1$

素因数の和:12962800

約数の個数: 60

約数和(自身を含む): 65876847960

約数和(自身を除く): 44877145980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12962779, 25925558, 38888337, 51851116, 64813895, 77776674, 116665011, 129627790, 155553348, 194441685, 233330022, 259255580, 349995033, 388883370, 466660044, 583325055, 699990066, 777766740, 1049985099, 1166650110, 1399980132, 1749975165, 2099970198, 2333300220, 3499950330, 4199940396, 5249925495, 6999900660, 10499850990, 20999701980]

約数ペア:

[(1, 20999701980), (2, 10499850990), (3, 6999900660), (4, 5249925495), (5, 4199940396), (6, 3499950330), (9, 2333300220), (10, 2099970198), (12, 1749975165), (15, 1399980132), (18, 1166650110), (20, 1049985099), (27, 777766740), (30, 699990066), (36, 583325055), (45, 466660044), (54, 388883370), (60, 349995033), (81, 259255580), (90, 233330022), (108, 194441685), (135, 155553348), (162, 129627790), (180, 116665011), (270, 77776674), (324, 64813895), (405, 51851116), (540, 38888337), (810, 25925558), (1620, 12962779)]