19984941

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{239}}^1$

素因数の和:430

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 11503059

約数列:

[1, 3, 9, 19, 27, 57, 163, 171, 239, 489, 513, 717, 1467, 2151, 3097, 4401, 4541, 6453, 9291, 13623, 27873, 38957, 40869, 83619, 116871, 122607, 350613, 740183, 1051839, 2220549, 6661647, 19984941]

約数ペア:

[(1, 19984941), (3, 6661647), (9, 2220549), (19, 1051839), (27, 740183), (57, 350613), (163, 122607), (171, 116871), (239, 83619), (489, 40869), (513, 38957), (717, 27873), (1467, 13623), (2151, 9291), (3097, 6453), (4401, 4541)]