21719830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197453}}^1$

素因数の和:197471

約数の個数: 16

約数和(自身を含む): 42650064

約数和(自身を除く): 20930234

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197453, 394906, 987265, 1974530, 2171983, 4343966, 10859915, 21719830]

約数ペア:

[(1, 21719830), (2, 10859915), (5, 4343966), (10, 2171983), (11, 1974530), (22, 987265), (55, 394906), (110, 197453)]