21113865

素因数分解:

$3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1409}}^1$

素因数の和:1463

約数の個数: 40

約数和(自身を含む): 38899080

約数和(自身を除く): 17785215

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 81, 111, 135, 185, 333, 405, 555, 999, 1409, 1665, 2997, 4227, 4995, 7045, 12681, 14985, 21135, 38043, 52133, 63405, 114129, 156399, 190215, 260665, 469197, 570645, 781995, 1407591, 2345985, 4222773, 7037955, 21113865]

約数ペア:

[(1, 21113865), (3, 7037955), (5, 4222773), (9, 2345985), (15, 1407591), (27, 781995), (37, 570645), (45, 469197), (81, 260665), (111, 190215), (135, 156399), (185, 114129), (333, 63405), (405, 52133), (555, 38043), (999, 21135), (1409, 14985), (1665, 12681), (2997, 7045), (4227, 4995)]