21294790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17599}}^1$

素因数の和:17628

約数の個数: 24

約数和(自身を含む): 42134400

約数和(自身を除く): 20839610

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17599, 35198, 87995, 175990, 193589, 387178, 967945, 1935890, 2129479, 4258958, 10647395, 21294790]

約数ペア:

[(1, 21294790), (2, 10647395), (5, 4258958), (10, 2129479), (11, 1935890), (22, 967945), (55, 387178), (110, 193589), (121, 175990), (242, 87995), (605, 35198), (1210, 17599)]