81851920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35281}}^1$

素因数の和:35323

約数の個数: 40

約数和(自身を含む): 196873560

約数和(自身を除く): 115021640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 35281, 70562, 141124, 176405, 282248, 352810, 564496, 705620, 1023149, 1411240, 2046298, 2822480, 4092596, 5115745, 8185192, 10231490, 16370384, 20462980, 40925960, 81851920]

約数ペア:

[(1, 81851920), (2, 40925960), (4, 20462980), (5, 16370384), (8, 10231490), (10, 8185192), (16, 5115745), (20, 4092596), (29, 2822480), (40, 2046298), (58, 1411240), (80, 1023149), (116, 705620), (145, 564496), (232, 352810), (290, 282248), (464, 176405), (580, 141124), (1160, 70562), (2320, 35281)]