19950355

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{439}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 24552000

約数和(自身を除く): 4601645

約数列:

[1, 5, 61, 149, 305, 439, 745, 2195, 9089, 26779, 45445, 65411, 133895, 327055, 3990071, 19950355]

約数ペア:

[(1, 19950355), (5, 3990071), (61, 327055), (149, 133895), (305, 65411), (439, 45445), (745, 26779), (2195, 9089)]