20958501

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{503}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10974939

約数列:

[1, 3, 17, 19, 43, 51, 57, 129, 323, 503, 731, 817, 969, 1509, 2193, 2451, 8551, 9557, 13889, 21629, 25653, 28671, 41667, 64887, 162469, 367693, 410951, 487407, 1103079, 1232853, 6986167, 20958501]

約数ペア:

[(1, 20958501), (3, 6986167), (17, 1232853), (19, 1103079), (43, 487407), (51, 410951), (57, 367693), (129, 162469), (323, 64887), (503, 41667), (731, 28671), (817, 25653), (969, 21629), (1509, 13889), (2193, 9557), (2451, 8551)]