818120

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 1867320

約数和(自身を除く): 1049200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 181, 226, 362, 452, 565, 724, 904, 905, 1130, 1448, 1810, 2260, 3620, 4520, 7240, 20453, 40906, 81812, 102265, 163624, 204530, 409060, 818120]

約数ペア:

[(1, 818120), (2, 409060), (4, 204530), (5, 163624), (8, 102265), (10, 81812), (20, 40906), (40, 20453), (113, 7240), (181, 4520), (226, 3620), (362, 2260), (452, 1810), (565, 1448), (724, 1130), (904, 905)]