21947440

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1093}}^1$

素因数の和:1357

約数の個数: 40

約数和(自身を含む): 51277968

約数和(自身を除く): 29330528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1093, 1255, 2008, 2186, 2510, 4016, 4372, 5020, 5465, 8744, 10040, 10930, 17488, 20080, 21860, 43720, 87440, 274343, 548686, 1097372, 1371715, 2194744, 2743430, 4389488, 5486860, 10973720, 21947440]

約数ペア:

[(1, 21947440), (2, 10973720), (4, 5486860), (5, 4389488), (8, 2743430), (10, 2194744), (16, 1371715), (20, 1097372), (40, 548686), (80, 274343), (251, 87440), (502, 43720), (1004, 21860), (1093, 20080), (1255, 17488), (2008, 10930), (2186, 10040), (2510, 8744), (4016, 5465), (4372, 5020)]