19812565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 26597376

約数和(自身を除く): 6784811

約数列:

[1, 5, 17, 31, 73, 85, 103, 155, 365, 515, 527, 1241, 1751, 2263, 2635, 3193, 6205, 7519, 8755, 11315, 15965, 37595, 38471, 54281, 127823, 192355, 233089, 271405, 639115, 1165445, 3962513, 19812565]

約数ペア:

[(1, 19812565), (5, 3962513), (17, 1165445), (31, 639115), (73, 271405), (85, 233089), (103, 192355), (155, 127823), (365, 54281), (515, 38471), (527, 37595), (1241, 15965), (1751, 11315), (2263, 8755), (2635, 7519), (3193, 6205)]