997919919

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{4733}}^1$

素因数の和:4901

約数の個数: 40

約数和(自身を含む): 1580966640

約数和(自身を除く): 583046721

約数列:

[1, 3, 9, 19, 27, 57, 81, 137, 171, 411, 513, 1233, 1539, 2603, 3699, 4733, 7809, 11097, 14199, 23427, 42597, 70281, 89927, 127791, 210843, 269781, 383373, 648421, 809343, 1945263, 2428029, 5835789, 7284087, 12319999, 17507367, 36959997, 52522101, 110879991, 332639973, 997919919]

約数ペア:

[(1, 997919919), (3, 332639973), (9, 110879991), (19, 52522101), (27, 36959997), (57, 17507367), (81, 12319999), (137, 7284087), (171, 5835789), (411, 2428029), (513, 1945263), (1233, 809343), (1539, 648421), (2603, 383373), (3699, 269781), (4733, 210843), (7809, 127791), (11097, 89927), (14199, 70281), (23427, 42597)]