18737485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 26514432

約数和(自身を除く): 7776947

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 403, 527, 547, 1105, 2015, 2635, 2735, 6851, 7111, 9299, 16957, 34255, 35555, 46495, 84785, 120887, 220441, 288269, 604435, 1102205, 1441345, 3747497, 18737485]

約数ペア:

[(1, 18737485), (5, 3747497), (13, 1441345), (17, 1102205), (31, 604435), (65, 288269), (85, 220441), (155, 120887), (221, 84785), (403, 46495), (527, 35555), (547, 34255), (1105, 16957), (2015, 9299), (2635, 7111), (2735, 6851)]