20000475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8081}}^1$

素因数の和:8108

約数の個数: 36

約数和(自身を含む): 39084552

約数和(自身を除く): 19084077

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8081, 24243, 40405, 72729, 88891, 121215, 202025, 266673, 363645, 444455, 606075, 800019, 1333365, 1818225, 2222275, 4000095, 6666825, 20000475]

約数ペア:

[(1, 20000475), (3, 6666825), (5, 4000095), (9, 2222275), (11, 1818225), (15, 1333365), (25, 800019), (33, 606075), (45, 444455), (55, 363645), (75, 266673), (99, 202025), (165, 121215), (225, 88891), (275, 72729), (495, 40405), (825, 24243), (2475, 8081)]