19965605

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:629

約数の個数: 24

約数和(自身を含む): 26815992

約数和(自身を除く): 6850387

約数列:

[1, 5, 11, 55, 61, 121, 305, 541, 605, 671, 2705, 3355, 5951, 7381, 29755, 33001, 36905, 65461, 165005, 327305, 363011, 1815055, 3993121, 19965605]

約数ペア:

[(1, 19965605), (5, 3993121), (11, 1815055), (55, 363011), (61, 327305), (121, 165005), (305, 65461), (541, 36905), (605, 33001), (671, 29755), (2705, 7381), (3355, 5951)]