20858080

素因数分解:

$2^5\times 5^1\times {\mathrm{130363}}^1$

素因数の和:130378

約数の個数: 24

約数和(自身を含む): 49277592

約数和(自身を除く): 28419512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130363, 260726, 521452, 651815, 1042904, 1303630, 2085808, 2607260, 4171616, 5214520, 10429040, 20858080]

約数ペア:

[(1, 20858080), (2, 10429040), (4, 5214520), (5, 4171616), (8, 2607260), (10, 2085808), (16, 1303630), (20, 1042904), (32, 651815), (40, 521452), (80, 260726), (160, 130363)]