221330680

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{15413}}^1$

素因数の和:15783

約数の個数: 32

約数和(自身を含む): 499413600

約数和(自身を除く): 278082920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1795, 2872, 3590, 7180, 14360, 15413, 30826, 61652, 77065, 123304, 154130, 308260, 616520, 5533267, 11066534, 22133068, 27666335, 44266136, 55332670, 110665340, 221330680]

約数ペア:

[(1, 221330680), (2, 110665340), (4, 55332670), (5, 44266136), (8, 27666335), (10, 22133068), (20, 11066534), (40, 5533267), (359, 616520), (718, 308260), (1436, 154130), (1795, 123304), (2872, 77065), (3590, 61652), (7180, 30826), (14360, 15413)]