20242665

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{563}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 38009088

約数和(自身を除く): 17766423

約数列:

[1, 3, 5, 9, 15, 17, 45, 47, 51, 85, 141, 153, 235, 255, 423, 563, 705, 765, 799, 1689, 2115, 2397, 2815, 3995, 5067, 7191, 8445, 9571, 11985, 25335, 26461, 28713, 35955, 47855, 79383, 86139, 132305, 143565, 238149, 396915, 430695, 449837, 1190745, 1349511, 2249185, 4048533, 6747555, 20242665]

約数ペア:

[(1, 20242665), (3, 6747555), (5, 4048533), (9, 2249185), (15, 1349511), (17, 1190745), (45, 449837), (47, 430695), (51, 396915), (85, 238149), (141, 143565), (153, 132305), (235, 86139), (255, 79383), (423, 47855), (563, 35955), (705, 28713), (765, 26461), (799, 25335), (1689, 11985), (2115, 9571), (2397, 8445), (2815, 7191), (3995, 5067)]