20280915

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8837}}^1$

素因数の和:8868

約数の個数: 32

約数和(自身を含む): 38180160

約数和(自身を除く): 17899245

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 8837, 26511, 44185, 79533, 132555, 150229, 238599, 397665, 450687, 751145, 1192995, 1352061, 2253435, 4056183, 6760305, 20280915]

約数ペア:

[(1, 20280915), (3, 6760305), (5, 4056183), (9, 2253435), (15, 1352061), (17, 1192995), (27, 751145), (45, 450687), (51, 397665), (85, 238599), (135, 150229), (153, 132555), (255, 79533), (459, 44185), (765, 26511), (2295, 8837)]