20812725

素因数分解:

$3^2\times 5^2\times {\mathrm{233}}^1\times {\mathrm{397}}^1$

素因数の和:646

約数の個数: 36

約数和(自身を含む): 37532196

約数和(自身を除く): 16719471

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 233, 397, 699, 1165, 1191, 1985, 2097, 3495, 3573, 5825, 5955, 9925, 10485, 17475, 17865, 29775, 52425, 89325, 92501, 277503, 462505, 832509, 1387515, 2312525, 4162545, 6937575, 20812725]

約数ペア:

[(1, 20812725), (3, 6937575), (5, 4162545), (9, 2312525), (15, 1387515), (25, 832509), (45, 462505), (75, 277503), (225, 92501), (233, 89325), (397, 52425), (699, 29775), (1165, 17865), (1191, 17475), (1985, 10485), (2097, 9925), (3495, 5955), (3573, 5825)]