20405360

素因数分解:

$2^4\times 5^1\times {\mathrm{379}}^1\times {\mathrm{673}}^1$

素因数の和:1065

約数の個数: 40

約数和(自身を含む): 47638320

約数和(自身を除く): 27232960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 379, 673, 758, 1346, 1516, 1895, 2692, 3032, 3365, 3790, 5384, 6064, 6730, 7580, 10768, 13460, 15160, 26920, 30320, 53840, 255067, 510134, 1020268, 1275335, 2040536, 2550670, 4081072, 5101340, 10202680, 20405360]

約数ペア:

[(1, 20405360), (2, 10202680), (4, 5101340), (5, 4081072), (8, 2550670), (10, 2040536), (16, 1275335), (20, 1020268), (40, 510134), (80, 255067), (379, 53840), (673, 30320), (758, 26920), (1346, 15160), (1516, 13460), (1895, 10768), (2692, 7580), (3032, 6730), (3365, 6064), (3790, 5384)]