21716420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98711}}^1$

素因数の和:98731

約数の個数: 24

約数和(自身を含む): 49750848

約数和(自身を除く): 28034428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98711, 197422, 394844, 493555, 987110, 1085821, 1974220, 2171642, 4343284, 5429105, 10858210, 21716420]

約数ペア:

[(1, 21716420), (2, 10858210), (4, 5429105), (5, 4343284), (10, 2171642), (11, 1974220), (20, 1085821), (22, 987110), (44, 493555), (55, 394844), (110, 197422), (220, 98711)]