19950515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9901}}^1$

素因数の和:9950

約数の個数: 16

約数和(自身を含む): 26616576

約数和(自身を除く): 6666061

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9901, 49505, 128713, 306931, 643565, 1534655, 3990103, 19950515]

約数ペア:

[(1, 19950515), (5, 3990103), (13, 1534655), (31, 643565), (65, 306931), (155, 128713), (403, 49505), (2015, 9901)]