21988872

素因数分解:

$2^3\times 3^2\times {\mathrm{305401}}^1$

素因数の和:305413

約数の個数: 24

約数和(自身を含む): 59553390

約数和(自身を除く): 37564518

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 305401, 610802, 916203, 1221604, 1832406, 2443208, 2748609, 3664812, 5497218, 7329624, 10994436, 21988872]

約数ペア:

[(1, 21988872), (2, 10994436), (3, 7329624), (4, 5497218), (6, 3664812), (8, 2748609), (9, 2443208), (12, 1832406), (18, 1221604), (24, 916203), (36, 610802), (72, 305401)]