20884760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40163}}^1$

素因数の和:40187

約数の個数: 32

約数和(自身を含む): 50606640

約数和(自身を除く): 29721880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40163, 80326, 160652, 200815, 321304, 401630, 522119, 803260, 1044238, 1606520, 2088476, 2610595, 4176952, 5221190, 10442380, 20884760]

約数ペア:

[(1, 20884760), (2, 10442380), (4, 5221190), (5, 4176952), (8, 2610595), (10, 2088476), (13, 1606520), (20, 1044238), (26, 803260), (40, 522119), (52, 401630), (65, 321304), (104, 200815), (130, 160652), (260, 80326), (520, 40163)]