21638406

素因数分解:

$2^1\times 3^1\times {\mathrm{41}}^1\times {\mathrm{87961}}^1$

素因数の和:88007

約数の個数: 16

約数和(自身を含む): 44332848

約数和(自身を除く): 22694442

約数列:

[1, 2, 3, 6, 41, 82, 123, 246, 87961, 175922, 263883, 527766, 3606401, 7212802, 10819203, 21638406]

約数ペア:

[(1, 21638406), (2, 10819203), (3, 7212802), (6, 3606401), (41, 527766), (82, 263883), (123, 175922), (246, 87961)]