20876543991

素因数分解:

$3^4\times {\mathrm{97}}^1\times {\mathrm{163}}^1\times {\mathrm{16301}}^1$

素因数の和:16573

約数の個数: 40

約数和(自身を含む): 31702695024

約数和(自身を除く): 10826151033

約数列:

[1, 3, 9, 27, 81, 97, 163, 291, 489, 873, 1467, 2619, 4401, 7857, 13203, 15811, 16301, 47433, 48903, 142299, 146709, 426897, 440127, 1280691, 1320381, 1581197, 2657063, 4743591, 7971189, 14230773, 23913567, 42692319, 71740701, 128076957, 215222103, 257735111, 773205333, 2319615999, 6958847997, 20876543991]

約数ペア:

[(1, 20876543991), (3, 6958847997), (9, 2319615999), (27, 773205333), (81, 257735111), (97, 215222103), (163, 128076957), (291, 71740701), (489, 42692319), (873, 23913567), (1467, 14230773), (2619, 7971189), (4401, 4743591), (7857, 2657063), (13203, 1581197), (15811, 1320381), (16301, 1280691), (47433, 440127), (48903, 426897), (142299, 146709)]