21977840

素因数分解:

$2^4\times 5^1\times {\mathrm{274723}}^1$

素因数の和:274736

約数の個数: 20

約数和(自身を含む): 51098664

約数和(自身を除く): 29120824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274723, 549446, 1098892, 1373615, 2197784, 2747230, 4395568, 5494460, 10988920, 21977840]

約数ペア:

[(1, 21977840), (2, 10988920), (4, 5494460), (5, 4395568), (8, 2747230), (10, 2197784), (16, 1373615), (20, 1098892), (40, 549446), (80, 274723)]