28840820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21523}}^1$

素因数の和:21599

約数の個数: 24

約数和(自身を含む): 61472544

約数和(自身を除く): 32631724

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21523, 43046, 86092, 107615, 215230, 430460, 1442041, 2884082, 5768164, 7210205, 14420410, 28840820]

約数ペア:

[(1, 28840820), (2, 14420410), (4, 7210205), (5, 5768164), (10, 2884082), (20, 1442041), (67, 430460), (134, 215230), (268, 107615), (335, 86092), (670, 43046), (1340, 21523)]