20973735

素因数分解:

$3^4\times 5^1\times {\mathrm{51787}}^1$

素因数の和:51804

約数の個数: 20

約数和(自身を含む): 37598088

約数和(自身を除く): 16624353

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51787, 155361, 258935, 466083, 776805, 1398249, 2330415, 4194747, 6991245, 20973735]

約数ペア:

[(1, 20973735), (3, 6991245), (5, 4194747), (9, 2330415), (15, 1398249), (27, 776805), (45, 466083), (81, 258935), (135, 155361), (405, 51787)]