21967520

素因数分解:

$2^5\times 5^1\times {\mathrm{251}}^1\times {\mathrm{547}}^1$

素因数の和:813

約数の個数: 48

約数和(自身を含む): 52200288

約数和(自身を除く): 30232768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 251, 502, 547, 1004, 1094, 1255, 2008, 2188, 2510, 2735, 4016, 4376, 5020, 5470, 8032, 8752, 10040, 10940, 17504, 20080, 21880, 40160, 43760, 87520, 137297, 274594, 549188, 686485, 1098376, 1372970, 2196752, 2745940, 4393504, 5491880, 10983760, 21967520]

約数ペア:

[(1, 21967520), (2, 10983760), (4, 5491880), (5, 4393504), (8, 2745940), (10, 2196752), (16, 1372970), (20, 1098376), (32, 686485), (40, 549188), (80, 274594), (160, 137297), (251, 87520), (502, 43760), (547, 40160), (1004, 21880), (1094, 20080), (1255, 17504), (2008, 10940), (2188, 10040), (2510, 8752), (2735, 8032), (4016, 5470), (4376, 5020)]