639420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{10657}}^1$

素因数の和:10669

約数の個数: 24

約数和(自身を含む): 1790544

約数和(自身を除く): 1151124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 10657, 21314, 31971, 42628, 53285, 63942, 106570, 127884, 159855, 213140, 319710, 639420]

約数ペア:

[(1, 639420), (2, 319710), (3, 213140), (4, 159855), (5, 127884), (6, 106570), (10, 63942), (12, 53285), (15, 42628), (20, 31971), (30, 21314), (60, 10657)]