645607420

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{285667}}^1$

素因数の和:285789

約数の個数: 24

約数和(自身を含む): 1367778384

約数和(自身を除く): 722170964

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 285667, 571334, 1142668, 1428335, 2856670, 5713340, 32280371, 64560742, 129121484, 161401855, 322803710, 645607420]

約数ペア:

[(1, 645607420), (2, 322803710), (4, 161401855), (5, 129121484), (10, 64560742), (20, 32280371), (113, 5713340), (226, 2856670), (452, 1428335), (565, 1142668), (1130, 571334), (2260, 285667)]