21671865

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20939}}^1$

素因数の和:20973

約数の個数: 24

約数和(自身を含む): 39199680

約数和(自身を除く): 17527815

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20939, 62817, 104695, 188451, 314085, 481597, 942255, 1444791, 2407985, 4334373, 7223955, 21671865]

約数ペア:

[(1, 21671865), (3, 7223955), (5, 4334373), (9, 2407985), (15, 1444791), (23, 942255), (45, 481597), (69, 314085), (115, 188451), (207, 104695), (345, 62817), (1035, 20939)]