21265181

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{2153}}^1$

素因数の和:2260

約数の個数: 16

約数和(自身を含む): 26054784

約数和(自身を除く): 4789603

約数列:

[1, 7, 17, 83, 119, 581, 1411, 2153, 9877, 15071, 36601, 178699, 256207, 1250893, 3037883, 21265181]

約数ペア:

[(1, 21265181), (7, 3037883), (17, 1250893), (83, 256207), (119, 178699), (581, 36601), (1411, 15071), (2153, 9877)]