19894225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1493}}^1$

素因数の和:1557

約数の個数: 24

約数和(自身を含む): 27232632

約数和(自身を除く): 7338407

約数列:

[1, 5, 13, 25, 41, 65, 205, 325, 533, 1025, 1493, 2665, 7465, 13325, 19409, 37325, 61213, 97045, 306065, 485225, 795769, 1530325, 3978845, 19894225]

約数ペア:

[(1, 19894225), (5, 3978845), (13, 1530325), (25, 795769), (41, 485225), (65, 306065), (205, 97045), (325, 61213), (533, 37325), (1025, 19409), (1493, 13325), (2665, 7465)]