19984809

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{701}}^1$

素因数の和:777

約数の個数: 32

約数和(自身を含む): 31135104

約数和(自身を除く): 11150295

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 663, 701, 731, 1677, 2103, 2193, 9113, 9503, 11917, 27339, 28509, 30143, 35751, 90429, 154921, 391859, 464763, 512431, 1175577, 1537293, 6661603, 19984809]

約数ペア:

[(1, 19984809), (3, 6661603), (13, 1537293), (17, 1175577), (39, 512431), (43, 464763), (51, 391859), (129, 154921), (221, 90429), (559, 35751), (663, 30143), (701, 28509), (731, 27339), (1677, 11917), (2103, 9503), (2193, 9113)]