19518255

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 15862545

約数列:

[1, 3, 5, 9, 15, 41, 45, 71, 123, 149, 205, 213, 355, 369, 447, 615, 639, 745, 1065, 1341, 1845, 2235, 2911, 3195, 6109, 6705, 8733, 10579, 14555, 18327, 26199, 30545, 31737, 43665, 52895, 54981, 91635, 95211, 130995, 158685, 274905, 433739, 476055, 1301217, 2168695, 3903651, 6506085, 19518255]

約数ペア:

[(1, 19518255), (3, 6506085), (5, 3903651), (9, 2168695), (15, 1301217), (41, 476055), (45, 433739), (71, 274905), (123, 158685), (149, 130995), (205, 95211), (213, 91635), (355, 54981), (369, 52895), (447, 43665), (615, 31737), (639, 30545), (745, 26199), (1065, 18327), (1341, 14555), (1845, 10579), (2235, 8733), (2911, 6705), (3195, 6109)]