21770288

素因数分解:

$2^4\times {\mathrm{991}}^1\times {\mathrm{1373}}^1$

素因数の和:2372

約数の個数: 20

約数和(自身を含む): 42253248

約数和(自身を除く): 20482960

約数列:

[1, 2, 4, 8, 16, 991, 1373, 1982, 2746, 3964, 5492, 7928, 10984, 15856, 21968, 1360643, 2721286, 5442572, 10885144, 21770288]

約数ペア:

[(1, 21770288), (2, 10885144), (4, 5442572), (8, 2721286), (16, 1360643), (991, 21968), (1373, 15856), (1982, 10984), (2746, 7928), (3964, 5492)]