21139888

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17159}}^1$

素因数の和:17185

約数の個数: 40

約数和(自身を含む): 51068160

約数和(自身を除く): 29928272

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 616, 1232, 17159, 34318, 68636, 120113, 137272, 188749, 240226, 274544, 377498, 480452, 754996, 960904, 1321243, 1509992, 1921808, 2642486, 3019984, 5284972, 10569944, 21139888]

約数ペア:

[(1, 21139888), (2, 10569944), (4, 5284972), (7, 3019984), (8, 2642486), (11, 1921808), (14, 1509992), (16, 1321243), (22, 960904), (28, 754996), (44, 480452), (56, 377498), (77, 274544), (88, 240226), (112, 188749), (154, 137272), (176, 120113), (308, 68636), (616, 34318), (1232, 17159)]