720920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 1652400

約数和(自身を除く): 931480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 269, 335, 536, 538, 670, 1076, 1340, 1345, 2152, 2680, 2690, 5380, 10760, 18023, 36046, 72092, 90115, 144184, 180230, 360460, 720920]

約数ペア:

[(1, 720920), (2, 360460), (4, 180230), (5, 144184), (8, 90115), (10, 72092), (20, 36046), (40, 18023), (67, 10760), (134, 5380), (268, 2690), (269, 2680), (335, 2152), (536, 1345), (538, 1340), (670, 1076)]