20443647

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{317}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 32481792

約数和(自身を除く): 12038145

約数列:

[1, 3, 7, 21, 37, 83, 111, 249, 259, 317, 581, 777, 951, 1743, 2219, 3071, 6657, 9213, 11729, 21497, 26311, 35187, 64491, 78933, 82103, 184177, 246309, 552531, 973507, 2920521, 6814549, 20443647]

約数ペア:

[(1, 20443647), (3, 6814549), (7, 2920521), (21, 973507), (37, 552531), (83, 246309), (111, 184177), (249, 82103), (259, 78933), (317, 64491), (581, 35187), (777, 26311), (951, 21497), (1743, 11729), (2219, 9213), (3071, 6657)]