19879575

素因数分解:

$3^1\times 5^2\times {\mathrm{401}}^1\times {\mathrm{661}}^1$

素因数の和:1075

約数の個数: 24

約数和(自身を含む): 32999376

約数和(自身を除く): 13119801

約数列:

[1, 3, 5, 15, 25, 75, 401, 661, 1203, 1983, 2005, 3305, 6015, 9915, 10025, 16525, 30075, 49575, 265061, 795183, 1325305, 3975915, 6626525, 19879575]

約数ペア:

[(1, 19879575), (3, 6626525), (5, 3975915), (15, 1325305), (25, 795183), (75, 265061), (401, 49575), (661, 30075), (1203, 16525), (1983, 10025), (2005, 9915), (3305, 6015)]