20964591963

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{648677}}^1$

素因数の和:648718

約数の個数: 48

約数和(自身を含む): 37779006720

約数和(自身を除く): 16814414757

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 513, 567, 1197, 1539, 1701, 3591, 4617, 10773, 32319, 648677, 1946031, 4540739, 5838093, 12324863, 13622217, 17514279, 36974589, 40866651, 52542837, 86274041, 110923767, 122599953, 157628511, 258822123, 332771301, 367799859, 776466369, 998313903, 1103399577, 2329399107, 2994941709, 6988197321, 20964591963]

約数ペア:

[(1, 20964591963), (3, 6988197321), (7, 2994941709), (9, 2329399107), (19, 1103399577), (21, 998313903), (27, 776466369), (57, 367799859), (63, 332771301), (81, 258822123), (133, 157628511), (171, 122599953), (189, 110923767), (243, 86274041), (399, 52542837), (513, 40866651), (567, 36974589), (1197, 17514279), (1539, 13622217), (1701, 12324863), (3591, 5838093), (4617, 4540739), (10773, 1946031), (32319, 648677)]