20552920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7669}}^1$

素因数の和:7747

約数の個数: 32

約数和(自身を含む): 46940400

約数和(自身を除く): 26387480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7669, 15338, 30676, 38345, 61352, 76690, 153380, 306760, 513823, 1027646, 2055292, 2569115, 4110584, 5138230, 10276460, 20552920]

約数ペア:

[(1, 20552920), (2, 10276460), (4, 5138230), (5, 4110584), (8, 2569115), (10, 2055292), (20, 1027646), (40, 513823), (67, 306760), (134, 153380), (268, 76690), (335, 61352), (536, 38345), (670, 30676), (1340, 15338), (2680, 7669)]