20988516

素因数分解:

$2^2\times 3^1\times {\mathrm{103}}^1\times {\mathrm{16981}}^1$

素因数の和:17091

約数の個数: 24

約数和(自身を含む): 49451584

約数和(自身を除く): 28463068

約数列:

[1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618, 1236, 16981, 33962, 50943, 67924, 101886, 203772, 1749043, 3498086, 5247129, 6996172, 10494258, 20988516]

約数ペア:

[(1, 20988516), (2, 10494258), (3, 6996172), (4, 5247129), (6, 3498086), (12, 1749043), (103, 203772), (206, 101886), (309, 67924), (412, 50943), (618, 33962), (1236, 16981)]