21709928

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{26347}}^1$

素因数の和:26456

約数の個数: 16

約数和(自身を含む): 41102880

約数和(自身を除く): 19392952

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 26347, 52694, 105388, 210776, 2713741, 5427482, 10854964, 21709928]

約数ペア:

[(1, 21709928), (2, 10854964), (4, 5427482), (8, 2713741), (103, 210776), (206, 105388), (412, 52694), (824, 26347)]