21782505

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 35896320

約数和(自身を除く): 14113815

約数列:

[1, 3, 5, 15, 59, 151, 163, 177, 295, 453, 489, 755, 815, 885, 2265, 2445, 8909, 9617, 24613, 26727, 28851, 44545, 48085, 73839, 123065, 133635, 144255, 369195, 1452167, 4356501, 7260835, 21782505]

約数ペア:

[(1, 21782505), (3, 7260835), (5, 4356501), (15, 1452167), (59, 369195), (151, 144255), (163, 133635), (177, 123065), (295, 73839), (453, 48085), (489, 44545), (755, 28851), (815, 26727), (885, 24613), (2265, 9617), (2445, 8909)]