20699037

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 32611200

約数和(自身を除く): 11912163

約数列:

[1, 3, 9, 19, 27, 57, 157, 171, 257, 471, 513, 771, 1413, 2313, 2983, 4239, 4883, 6939, 8949, 14649, 26847, 40349, 43947, 80541, 121047, 131841, 363141, 766631, 1089423, 2299893, 6899679, 20699037]

約数ペア:

[(1, 20699037), (3, 6899679), (9, 2299893), (19, 1089423), (27, 766631), (57, 363141), (157, 131841), (171, 121047), (257, 80541), (471, 43947), (513, 40349), (771, 26847), (1413, 14649), (2313, 8949), (2983, 6939), (4239, 4883)]