311929780

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1\times {\mathrm{541}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 664344576

約数和(自身を除く): 352414796

約数列:

[1, 2, 4, 5, 10, 20, 127, 227, 254, 454, 508, 541, 635, 908, 1082, 1135, 1270, 2164, 2270, 2540, 2705, 4540, 5410, 10820, 28829, 57658, 68707, 115316, 122807, 137414, 144145, 245614, 274828, 288290, 343535, 491228, 576580, 614035, 687070, 1228070, 1374140, 2456140, 15596489, 31192978, 62385956, 77982445, 155964890, 311929780]

約数ペア:

[(1, 311929780), (2, 155964890), (4, 77982445), (5, 62385956), (10, 31192978), (20, 15596489), (127, 2456140), (227, 1374140), (254, 1228070), (454, 687070), (508, 614035), (541, 576580), (635, 491228), (908, 343535), (1082, 288290), (1135, 274828), (1270, 245614), (2164, 144145), (2270, 137414), (2540, 122807), (2705, 115316), (4540, 68707), (5410, 57658), (10820, 28829)]