19907085

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 37822464

約数和(自身を除く): 17915379

約数列:

[1, 3, 5, 11, 15, 17, 33, 47, 51, 55, 85, 141, 151, 165, 187, 235, 255, 453, 517, 561, 705, 755, 799, 935, 1551, 1661, 2265, 2397, 2567, 2585, 2805, 3995, 4983, 7097, 7701, 7755, 8305, 8789, 11985, 12835, 21291, 24915, 26367, 28237, 35485, 38505, 43945, 78067, 84711, 106455, 120649, 131835, 141185, 234201, 361947, 390335, 423555, 603245, 1171005, 1327139, 1809735, 3981417, 6635695, 19907085]

約数ペア:

[(1, 19907085), (3, 6635695), (5, 3981417), (11, 1809735), (15, 1327139), (17, 1171005), (33, 603245), (47, 423555), (51, 390335), (55, 361947), (85, 234201), (141, 141185), (151, 131835), (165, 120649), (187, 106455), (235, 84711), (255, 78067), (453, 43945), (517, 38505), (561, 35485), (705, 28237), (755, 26367), (799, 24915), (935, 21291), (1551, 12835), (1661, 11985), (2265, 8789), (2397, 8305), (2567, 7755), (2585, 7701), (2805, 7097), (3995, 4983)]