18690500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1289}}^1$

素因数の和:1337

約数の個数: 48

約数和(自身を含む): 42260400

約数和(自身を除く): 23569900

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 1289, 1450, 2578, 2900, 3625, 5156, 6445, 7250, 12890, 14500, 25780, 32225, 37381, 64450, 74762, 128900, 149524, 161125, 186905, 322250, 373810, 644500, 747620, 934525, 1869050, 3738100, 4672625, 9345250, 18690500]

約数ペア:

[(1, 18690500), (2, 9345250), (4, 4672625), (5, 3738100), (10, 1869050), (20, 934525), (25, 747620), (29, 644500), (50, 373810), (58, 322250), (100, 186905), (116, 161125), (125, 149524), (145, 128900), (250, 74762), (290, 64450), (500, 37381), (580, 32225), (725, 25780), (1289, 14500), (1450, 12890), (2578, 7250), (2900, 6445), (3625, 5156)]