19968507

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1657}}^1$

素因数の和:1779

約数の個数: 24

約数和(自身を含む): 31382624

約数和(自身を除く): 11414117

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 1657, 4017, 4971, 12051, 14913, 21541, 64623, 170671, 193869, 512013, 1536039, 2218723, 6656169, 19968507]

約数ペア:

[(1, 19968507), (3, 6656169), (9, 2218723), (13, 1536039), (39, 512013), (103, 193869), (117, 170671), (309, 64623), (927, 21541), (1339, 14913), (1657, 12051), (4017, 4971)]