20513133

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{269}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 30677400

約数和(自身を除く): 10164267

約数列:

[1, 3, 9, 37, 111, 229, 269, 333, 687, 807, 2061, 2421, 8473, 9953, 25419, 29859, 61601, 76257, 89577, 184803, 554409, 2279237, 6837711, 20513133]

約数ペア:

[(1, 20513133), (3, 6837711), (9, 2279237), (37, 554409), (111, 184803), (229, 89577), (269, 76257), (333, 61601), (687, 29859), (807, 25419), (2061, 9953), (2421, 8473)]