19910655

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1531}}^1$

素因数の和:1576

約数の個数: 36

約数和(自身を含む): 36685272

約数和(自身を除く): 16774617

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1531, 2601, 4335, 4593, 7655, 13005, 13779, 22965, 26027, 68895, 78081, 130135, 234243, 390405, 442459, 1171215, 1327377, 2212295, 3982131, 6636885, 19910655]

約数ペア:

[(1, 19910655), (3, 6636885), (5, 3982131), (9, 2212295), (15, 1327377), (17, 1171215), (45, 442459), (51, 390405), (85, 234243), (153, 130135), (255, 78081), (289, 68895), (765, 26027), (867, 22965), (1445, 13779), (1531, 13005), (2601, 7655), (4335, 4593)]