21634840

素因数分解:

$2^3\times 5^1\times {\mathrm{540871}}^1$

素因数の和:540882

約数の個数: 16

約数和(自身を含む): 48678480

約数和(自身を除く): 27043640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540871, 1081742, 2163484, 2704355, 4326968, 5408710, 10817420, 21634840]

約数ペア:

[(1, 21634840), (2, 10817420), (4, 5408710), (5, 4326968), (8, 2704355), (10, 2163484), (20, 1081742), (40, 540871)]