18385875

素因数分解:

$3^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 33827040

約数和(自身を除く): 15441165

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 125, 177, 225, 277, 295, 375, 531, 831, 885, 1125, 1385, 1475, 2493, 2655, 4155, 4425, 6925, 7375, 12465, 13275, 16343, 20775, 22125, 34625, 49029, 62325, 66375, 81715, 103875, 147087, 245145, 311625, 408575, 735435, 1225725, 2042875, 3677175, 6128625, 18385875]

約数ペア:

[(1, 18385875), (3, 6128625), (5, 3677175), (9, 2042875), (15, 1225725), (25, 735435), (45, 408575), (59, 311625), (75, 245145), (125, 147087), (177, 103875), (225, 81715), (277, 66375), (295, 62325), (375, 49029), (531, 34625), (831, 22125), (885, 20775), (1125, 16343), (1385, 13275), (1475, 12465), (2493, 7375), (2655, 6925), (4155, 4425)]