20641145

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 30336768

約数和(自身を除く): 9695623

約数列:

[1, 5, 7, 17, 35, 85, 113, 119, 307, 565, 595, 791, 1535, 1921, 2149, 3955, 5219, 9605, 10745, 13447, 26095, 34691, 36533, 67235, 173455, 182665, 242837, 589747, 1214185, 2948735, 4128229, 20641145]

約数ペア:

[(1, 20641145), (5, 4128229), (7, 2948735), (17, 1214185), (35, 589747), (85, 242837), (113, 182665), (119, 173455), (307, 67235), (565, 36533), (595, 34691), (791, 26095), (1535, 13447), (1921, 10745), (2149, 9605), (3955, 5219)]