64319620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{52721}}^1$

素因数の和:52791

約数の個数: 24

約数和(自身を含む): 137288088

約数和(自身を除く): 72968468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 52721, 105442, 210884, 263605, 527210, 1054420, 3215981, 6431962, 12863924, 16079905, 32159810, 64319620]

約数ペア:

[(1, 64319620), (2, 32159810), (4, 16079905), (5, 12863924), (10, 6431962), (20, 3215981), (61, 1054420), (122, 527210), (244, 263605), (305, 210884), (610, 105442), (1220, 52721)]