21102560

素因数分解:

$2^5\times 5^1\times {\mathrm{131891}}^1$

素因数の和:131906

約数の個数: 24

約数和(自身を含む): 49855176

約数和(自身を除く): 28752616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131891, 263782, 527564, 659455, 1055128, 1318910, 2110256, 2637820, 4220512, 5275640, 10551280, 21102560]

約数ペア:

[(1, 21102560), (2, 10551280), (4, 5275640), (5, 4220512), (8, 2637820), (10, 2110256), (16, 1318910), (20, 1055128), (32, 659455), (40, 527564), (80, 263782), (160, 131891)]