21396285

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9323}}^1$

素因数の和:9354

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 18883395

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9323, 27969, 46615, 83907, 139845, 158491, 251721, 419535, 475473, 792455, 1258605, 1426419, 2377365, 4279257, 7132095, 21396285]

約数ペア:

[(1, 21396285), (3, 7132095), (5, 4279257), (9, 2377365), (15, 1426419), (17, 1258605), (27, 792455), (45, 475473), (51, 419535), (85, 251721), (135, 158491), (153, 139845), (255, 83907), (459, 46615), (765, 27969), (2295, 9323)]