20888361

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 13262679

約数列:

[1, 3, 9, 13, 27, 39, 81, 83, 117, 239, 249, 351, 717, 747, 1053, 1079, 2151, 2241, 3107, 3237, 6453, 6723, 9321, 9711, 19359, 19837, 27963, 29133, 59511, 83889, 87399, 178533, 251667, 257881, 535599, 773643, 1606797, 2320929, 6962787, 20888361]

約数ペア:

[(1, 20888361), (3, 6962787), (9, 2320929), (13, 1606797), (27, 773643), (39, 535599), (81, 257881), (83, 251667), (117, 178533), (239, 87399), (249, 83889), (351, 59511), (717, 29133), (747, 27963), (1053, 19837), (1079, 19359), (2151, 9711), (2241, 9321), (3107, 6723), (3237, 6453)]