20217825

素因数分解:

$3^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1523}}^1$

素因数の和:1598

約数の個数: 36

約数和(自身を含む): 36850320

約数和(自身を除く): 16632495

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 177, 225, 295, 531, 885, 1475, 1523, 2655, 4425, 4569, 7615, 13275, 13707, 22845, 38075, 68535, 89857, 114225, 269571, 342675, 449285, 808713, 1347855, 2246425, 4043565, 6739275, 20217825]

約数ペア:

[(1, 20217825), (3, 6739275), (5, 4043565), (9, 2246425), (15, 1347855), (25, 808713), (45, 449285), (59, 342675), (75, 269571), (177, 114225), (225, 89857), (295, 68535), (531, 38075), (885, 22845), (1475, 13707), (1523, 13275), (2655, 7615), (4425, 4569)]