19705395

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 32643072

約数和(自身を除く): 12937677

約数列:

[1, 3, 5, 15, 43, 129, 137, 215, 223, 411, 645, 669, 685, 1115, 2055, 3345, 5891, 9589, 17673, 28767, 29455, 30551, 47945, 88365, 91653, 143835, 152755, 458265, 1313693, 3941079, 6568465, 19705395]

約数ペア:

[(1, 19705395), (3, 6568465), (5, 3941079), (15, 1313693), (43, 458265), (129, 152755), (137, 143835), (215, 91653), (223, 88365), (411, 47945), (645, 30551), (669, 29455), (685, 28767), (1115, 17673), (2055, 9589), (3345, 5891)]