20781088

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{12253}}^1$

素因数の和:12316

約数の個数: 24

約数和(自身を含む): 41688108

約数和(自身を除く): 20907020

約数列:

[1, 2, 4, 8, 16, 32, 53, 106, 212, 424, 848, 1696, 12253, 24506, 49012, 98024, 196048, 392096, 649409, 1298818, 2597636, 5195272, 10390544, 20781088]

約数ペア:

[(1, 20781088), (2, 10390544), (4, 5195272), (8, 2597636), (16, 1298818), (32, 649409), (53, 392096), (106, 196048), (212, 98024), (424, 49012), (848, 24506), (1696, 12253)]