18902457

素因数分解:

$3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{971}}^1$

素因数の和:1090

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 13445703

約数列:

[1, 3, 7, 9, 21, 27, 63, 103, 189, 309, 721, 927, 971, 2163, 2781, 2913, 6489, 6797, 8739, 19467, 20391, 26217, 61173, 100013, 183519, 300039, 700091, 900117, 2100273, 2700351, 6300819, 18902457]

約数ペア:

[(1, 18902457), (3, 6300819), (7, 2700351), (9, 2100273), (21, 900117), (27, 700091), (63, 300039), (103, 183519), (189, 100013), (309, 61173), (721, 26217), (927, 20391), (971, 19467), (2163, 8739), (2781, 6797), (2913, 6489)]