21243484

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{571}}^1$

素因数の和:777

約数の個数: 24

約数和(自身を含む): 38054016

約数和(自身を除く): 16810532

約数列:

[1, 2, 4, 71, 131, 142, 262, 284, 524, 571, 1142, 2284, 9301, 18602, 37204, 40541, 74801, 81082, 149602, 162164, 299204, 5310871, 10621742, 21243484]

約数ペア:

[(1, 21243484), (2, 10621742), (4, 5310871), (71, 299204), (131, 162164), (142, 149602), (262, 81082), (284, 74801), (524, 40541), (571, 37204), (1142, 18602), (2284, 9301)]