1291214840

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{285667}}^1$

素因数の和:285791

約数の個数: 32

約数和(自身を含む): 2930953680

約数和(自身を除く): 1639738840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 285667, 571334, 1142668, 1428335, 2285336, 2856670, 5713340, 11426680, 32280371, 64560742, 129121484, 161401855, 258242968, 322803710, 645607420, 1291214840]

約数ペア:

[(1, 1291214840), (2, 645607420), (4, 322803710), (5, 258242968), (8, 161401855), (10, 129121484), (20, 64560742), (40, 32280371), (113, 11426680), (226, 5713340), (452, 2856670), (565, 2285336), (904, 1428335), (1130, 1142668), (2260, 571334), (4520, 285667)]