28373620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128971}}^1$

素因数の和:128991

約数の個数: 24

約数和(自身を含む): 65001888

約数和(自身を除く): 36628268

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128971, 257942, 515884, 644855, 1289710, 1418681, 2579420, 2837362, 5674724, 7093405, 14186810, 28373620]

約数ペア:

[(1, 28373620), (2, 14186810), (4, 7093405), (5, 5674724), (10, 2837362), (11, 2579420), (20, 1418681), (22, 1289710), (44, 644855), (55, 515884), (110, 257942), (220, 128971)]