21218950

素因数分解:

$2^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{5113}}^1$

素因数の和:5208

約数の個数: 24

約数和(自身を含む): 39950568

約数和(自身を除く): 18731618

約数列:

[1, 2, 5, 10, 25, 50, 83, 166, 415, 830, 2075, 4150, 5113, 10226, 25565, 51130, 127825, 255650, 424379, 848758, 2121895, 4243790, 10609475, 21218950]

約数ペア:

[(1, 21218950), (2, 10609475), (5, 4243790), (10, 2121895), (25, 848758), (50, 424379), (83, 255650), (166, 127825), (415, 51130), (830, 25565), (2075, 10226), (4150, 5113)]