20049975

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8101}}^1$

素因数の和:8128

約数の個数: 36

約数和(自身を含む): 39181272

約数和(自身を除く): 19131297

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8101, 24303, 40505, 72909, 89111, 121515, 202525, 267333, 364545, 445555, 607575, 801999, 1336665, 1822725, 2227775, 4009995, 6683325, 20049975]

約数ペア:

[(1, 20049975), (3, 6683325), (5, 4009995), (9, 2227775), (11, 1822725), (15, 1336665), (25, 801999), (33, 607575), (45, 445555), (55, 364545), (75, 267333), (99, 202525), (165, 121515), (225, 89111), (275, 72909), (495, 40505), (825, 24303), (2475, 8101)]