21820378

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{271}}^1\times {\mathrm{317}}^1$

素因数の和:717

約数の個数: 16

約数和(自身を含む): 33214464

約数和(自身を除く): 11394086

約数列:

[1, 2, 127, 254, 271, 317, 542, 634, 34417, 40259, 68834, 80518, 85907, 171814, 10910189, 21820378]

約数ペア:

[(1, 21820378), (2, 10910189), (127, 171814), (254, 85907), (271, 80518), (317, 68834), (542, 40259), (634, 34417)]