290642020

素因数分解:

$2^2\times 5^1\times {\mathrm{1607}}^1\times {\mathrm{9043}}^1$

素因数の和:10659

約数の個数: 24

約数和(自身を含む): 610795584

約数和(自身を除く): 320153564

約数列:

[1, 2, 4, 5, 10, 20, 1607, 3214, 6428, 8035, 9043, 16070, 18086, 32140, 36172, 45215, 90430, 180860, 14532101, 29064202, 58128404, 72660505, 145321010, 290642020]

約数ペア:

[(1, 290642020), (2, 145321010), (4, 72660505), (5, 58128404), (10, 29064202), (20, 14532101), (1607, 180860), (3214, 90430), (6428, 45215), (8035, 36172), (9043, 32140), (16070, 18086)]