21239360

素因数分解:

$2^6\times 5^1\times {\mathrm{66373}}^1$

素因数の和:66390

約数の個数: 28

約数和(自身を含む): 50576988

約数和(自身を除く): 29337628

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66373, 132746, 265492, 331865, 530984, 663730, 1061968, 1327460, 2123936, 2654920, 4247872, 5309840, 10619680, 21239360]

約数ペア:

[(1, 21239360), (2, 10619680), (4, 5309840), (5, 4247872), (8, 2654920), (10, 2123936), (16, 1327460), (20, 1061968), (32, 663730), (40, 530984), (64, 331865), (80, 265492), (160, 132746), (320, 66373)]