21415928

素因数分解:

$2^3\times {\mathrm{419}}^1\times {\mathrm{6389}}^1$

素因数の和:6814

約数の個数: 16

約数和(自身を含む): 40257000

約数和(自身を除く): 18841072

約数列:

[1, 2, 4, 8, 419, 838, 1676, 3352, 6389, 12778, 25556, 51112, 2676991, 5353982, 10707964, 21415928]

約数ペア:

[(1, 21415928), (2, 10707964), (4, 5353982), (8, 2676991), (419, 51112), (838, 25556), (1676, 12778), (3352, 6389)]