21874268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1327}}^1$

素因数の和:1661

約数の個数: 24

約数和(自身を含む): 41385792

約数和(自身を除く): 19511524

約数列:

[1, 2, 4, 13, 26, 52, 317, 634, 1268, 1327, 2654, 4121, 5308, 8242, 16484, 17251, 34502, 69004, 420659, 841318, 1682636, 5468567, 10937134, 21874268]

約数ペア:

[(1, 21874268), (2, 10937134), (4, 5468567), (13, 1682636), (26, 841318), (52, 420659), (317, 69004), (634, 34502), (1268, 17251), (1327, 16484), (2654, 8242), (4121, 5308)]