20688687

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2557}}^1$

素因数の和:2623

約数の個数: 24

約数和(自身を含む): 31923840

約数和(自身を除く): 11235153

約数列:

[1, 3, 9, 29, 31, 87, 93, 261, 279, 899, 2557, 2697, 7671, 8091, 23013, 74153, 79267, 222459, 237801, 667377, 713403, 2298743, 6896229, 20688687]

約数ペア:

[(1, 20688687), (3, 6896229), (9, 2298743), (29, 713403), (31, 667377), (87, 237801), (93, 222459), (261, 79267), (279, 74153), (899, 23013), (2557, 8091), (2697, 7671)]