254328015

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{20753}}^1$

素因数の和:20823

約数の個数: 32

約数和(自身を含む): 438324480

約数和(自身を除く): 183996465

約数列:

[1, 3, 5, 15, 19, 43, 57, 95, 129, 215, 285, 645, 817, 2451, 4085, 12255, 20753, 62259, 103765, 311295, 394307, 892379, 1182921, 1971535, 2677137, 4461895, 5914605, 13385685, 16955201, 50865603, 84776005, 254328015]

約数ペア:

[(1, 254328015), (3, 84776005), (5, 50865603), (15, 16955201), (19, 13385685), (43, 5914605), (57, 4461895), (95, 2677137), (129, 1971535), (215, 1182921), (285, 892379), (645, 394307), (817, 311295), (2451, 103765), (4085, 62259), (12255, 20753)]