21986820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{122149}}^1$

素因数の和:122164

約数の個数: 36

約数和(自身を含む): 66693900

約数和(自身を除く): 44707080

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 122149, 244298, 366447, 488596, 610745, 732894, 1099341, 1221490, 1465788, 1832235, 2198682, 2442980, 3664470, 4397364, 5496705, 7328940, 10993410, 21986820]

約数ペア:

[(1, 21986820), (2, 10993410), (3, 7328940), (4, 5496705), (5, 4397364), (6, 3664470), (9, 2442980), (10, 2198682), (12, 1832235), (15, 1465788), (18, 1221490), (20, 1099341), (30, 732894), (36, 610745), (45, 488596), (60, 366447), (90, 244298), (180, 122149)]