20740018

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{1427}}^1$

素因数の和:1498

約数の個数: 24

約数和(自身を含む): 34494768

約数和(自身を除く): 13754750

約数列:

[1, 2, 13, 26, 43, 86, 169, 338, 559, 1118, 1427, 2854, 7267, 14534, 18551, 37102, 61361, 122722, 241163, 482326, 797693, 1595386, 10370009, 20740018]

約数ペア:

[(1, 20740018), (2, 10370009), (13, 1595386), (26, 797693), (43, 482326), (86, 241163), (169, 122722), (338, 61361), (559, 37102), (1118, 18551), (1427, 14534), (2854, 7267)]