21782860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99013}}^1$

素因数の和:99033

約数の個数: 24

約数和(自身を含む): 49903056

約数和(自身を除く): 28120196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99013, 198026, 396052, 495065, 990130, 1089143, 1980260, 2178286, 4356572, 5445715, 10891430, 21782860]

約数ペア:

[(1, 21782860), (2, 10891430), (4, 5445715), (5, 4356572), (10, 2178286), (11, 1980260), (20, 1089143), (22, 990130), (44, 495065), (55, 396052), (110, 198026), (220, 99013)]