19935225

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2161}}^1$

素因数の和:2218

約数の個数: 36

約数和(自身を含む): 36594012

約数和(自身を除く): 16658787

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 2161, 3075, 6483, 9225, 10805, 19449, 32415, 54025, 88601, 97245, 162075, 265803, 443005, 486225, 797409, 1329015, 2215025, 3987045, 6645075, 19935225]

約数ペア:

[(1, 19935225), (3, 6645075), (5, 3987045), (9, 2215025), (15, 1329015), (25, 797409), (41, 486225), (45, 443005), (75, 265803), (123, 162075), (205, 97245), (225, 88601), (369, 54025), (615, 32415), (1025, 19449), (1845, 10805), (2161, 9225), (3075, 6483)]