19820775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{701}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 36560160

約数和(自身を除く): 16739385

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 145, 195, 325, 377, 435, 701, 725, 975, 1131, 1885, 2103, 2175, 3505, 5655, 9113, 9425, 10515, 17525, 20329, 27339, 28275, 45565, 52575, 60987, 101645, 136695, 227825, 264277, 304935, 508225, 683475, 792831, 1321385, 1524675, 3964155, 6606925, 19820775]

約数ペア:

[(1, 19820775), (3, 6606925), (5, 3964155), (13, 1524675), (15, 1321385), (25, 792831), (29, 683475), (39, 508225), (65, 304935), (75, 264277), (87, 227825), (145, 136695), (195, 101645), (325, 60987), (377, 52575), (435, 45565), (701, 28275), (725, 27339), (975, 20329), (1131, 17525), (1885, 10515), (2103, 9425), (2175, 9113), (3505, 5655)]