8420120

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1163}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 19066320

約数和(自身を除く): 10646200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1163, 1448, 1810, 2326, 3620, 4652, 5815, 7240, 9304, 11630, 23260, 46520, 210503, 421006, 842012, 1052515, 1684024, 2105030, 4210060, 8420120]

約数ペア:

[(1, 8420120), (2, 4210060), (4, 2105030), (5, 1684024), (8, 1052515), (10, 842012), (20, 421006), (40, 210503), (181, 46520), (362, 23260), (724, 11630), (905, 9304), (1163, 7240), (1448, 5815), (1810, 4652), (2326, 3620)]