21998475

素因数分解:

$3^2\times 5^2\times {\mathrm{97771}}^1$

素因数の和:97787

約数の個数: 18

約数和(自身を含む): 39402116

約数和(自身を除く): 17403641

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 97771, 293313, 488855, 879939, 1466565, 2444275, 4399695, 7332825, 21998475]

約数ペア:

[(1, 21998475), (3, 7332825), (5, 4399695), (9, 2444275), (15, 1466565), (25, 879939), (45, 488855), (75, 293313), (225, 97771)]