399403264

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2791}}^1$

素因数の和:2863

約数の個数: 72

約数和(自身を含む): 878854592

約数和(自身を除く): 479451328

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 128, 172, 208, 256, 344, 416, 559, 688, 832, 1118, 1376, 1664, 2236, 2752, 2791, 3328, 4472, 5504, 5582, 8944, 11008, 11164, 17888, 22328, 35776, 36283, 44656, 71552, 72566, 89312, 120013, 143104, 145132, 178624, 240026, 290264, 357248, 480052, 580528, 714496, 960104, 1161056, 1560169, 1920208, 2322112, 3120338, 3840416, 4644224, 6240676, 7680832, 9288448, 12481352, 15361664, 24962704, 30723328, 49925408, 99850816, 199701632, 399403264]

約数ペア:

[(1, 399403264), (2, 199701632), (4, 99850816), (8, 49925408), (13, 30723328), (16, 24962704), (26, 15361664), (32, 12481352), (43, 9288448), (52, 7680832), (64, 6240676), (86, 4644224), (104, 3840416), (128, 3120338), (172, 2322112), (208, 1920208), (256, 1560169), (344, 1161056), (416, 960104), (559, 714496), (688, 580528), (832, 480052), (1118, 357248), (1376, 290264), (1664, 240026), (2236, 178624), (2752, 145132), (2791, 143104), (3328, 120013), (4472, 89312), (5504, 72566), (5582, 71552), (8944, 44656), (11008, 36283), (11164, 35776), (17888, 22328)]