18700020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103889}}^1$

素因数の和:103904

約数の個数: 36

約数和(自身を含む): 56723940

約数和(自身を除く): 38023920

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 103889, 207778, 311667, 415556, 519445, 623334, 935001, 1038890, 1246668, 1558335, 1870002, 2077780, 3116670, 3740004, 4675005, 6233340, 9350010, 18700020]

約数ペア:

[(1, 18700020), (2, 9350010), (3, 6233340), (4, 4675005), (5, 3740004), (6, 3116670), (9, 2077780), (10, 1870002), (12, 1558335), (15, 1246668), (18, 1038890), (20, 935001), (30, 623334), (36, 519445), (45, 415556), (60, 311667), (90, 207778), (180, 103889)]