40804640

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1409}}^1$

素因数の和:1605

約数の個数: 48

約数和(自身を含む): 97002360

約数和(自身を除く): 56197720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 724, 905, 1409, 1448, 1810, 2818, 2896, 3620, 5636, 5792, 7045, 7240, 11272, 14090, 14480, 22544, 28180, 28960, 45088, 56360, 112720, 225440, 255029, 510058, 1020116, 1275145, 2040232, 2550290, 4080464, 5100580, 8160928, 10201160, 20402320, 40804640]

約数ペア:

[(1, 40804640), (2, 20402320), (4, 10201160), (5, 8160928), (8, 5100580), (10, 4080464), (16, 2550290), (20, 2040232), (32, 1275145), (40, 1020116), (80, 510058), (160, 255029), (181, 225440), (362, 112720), (724, 56360), (905, 45088), (1409, 28960), (1448, 28180), (1810, 22544), (2818, 14480), (2896, 14090), (3620, 11272), (5636, 7240), (5792, 7045)]