20949560

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7817}}^1$

素因数の和:7895

約数の個数: 32

約数和(自身を含む): 47846160

約数和(自身を除く): 26896600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7817, 15634, 31268, 39085, 62536, 78170, 156340, 312680, 523739, 1047478, 2094956, 2618695, 4189912, 5237390, 10474780, 20949560]

約数ペア:

[(1, 20949560), (2, 10474780), (4, 5237390), (5, 4189912), (8, 2618695), (10, 2094956), (20, 1047478), (40, 523739), (67, 312680), (134, 156340), (268, 78170), (335, 62536), (536, 39085), (670, 31268), (1340, 15634), (2680, 7817)]