81275775

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1039}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 154752000

約数和(自身を除く): 73476225

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 149, 175, 447, 525, 745, 1039, 1043, 2235, 3117, 3129, 3725, 5195, 5215, 7273, 11175, 15585, 15645, 21819, 25975, 26075, 36365, 77925, 78225, 109095, 154811, 181825, 464433, 545475, 774055, 1083677, 2322165, 3251031, 3870275, 5418385, 11610825, 16255155, 27091925, 81275775]

約数ペア:

[(1, 81275775), (3, 27091925), (5, 16255155), (7, 11610825), (15, 5418385), (21, 3870275), (25, 3251031), (35, 2322165), (75, 1083677), (105, 774055), (149, 545475), (175, 464433), (447, 181825), (525, 154811), (745, 109095), (1039, 78225), (1043, 77925), (2235, 36365), (3117, 26075), (3129, 25975), (3725, 21819), (5195, 15645), (5215, 15585), (7273, 11175)]