20969787

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 30910720

約数和(自身を除く): 9940933

約数列:

[1, 3, 19, 37, 57, 61, 111, 163, 183, 489, 703, 1159, 2109, 2257, 3097, 3477, 6031, 6771, 9291, 9943, 18093, 29829, 42883, 114589, 128649, 188917, 343767, 367891, 566751, 1103673, 6989929, 20969787]

約数ペア:

[(1, 20969787), (3, 6989929), (19, 1103673), (37, 566751), (57, 367891), (61, 343767), (111, 188917), (163, 128649), (183, 114589), (489, 42883), (703, 29829), (1159, 18093), (2109, 9943), (2257, 9291), (3097, 6771), (3477, 6031)]