1294718720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{487}}^1$

素因数の和:606

約数の個数: 144

約数和(自身を含む): 3255748608

約数和(自身を除く): 1961029888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 67, 80, 124, 128, 134, 155, 160, 248, 256, 268, 310, 320, 335, 487, 496, 536, 620, 640, 670, 974, 992, 1072, 1240, 1280, 1340, 1948, 1984, 2077, 2144, 2435, 2480, 2680, 3896, 3968, 4154, 4288, 4870, 4960, 5360, 7792, 7936, 8308, 8576, 9740, 9920, 10385, 10720, 15097, 15584, 16616, 17152, 19480, 19840, 20770, 21440, 30194, 31168, 32629, 33232, 38960, 39680, 41540, 42880, 60388, 62336, 65258, 66464, 75485, 77920, 83080, 85760, 120776, 124672, 130516, 132928, 150970, 155840, 163145, 166160, 241552, 261032, 265856, 301940, 311680, 326290, 332320, 483104, 522064, 531712, 603880, 623360, 652580, 664640, 966208, 1011499, 1044128, 1207760, 1305160, 1329280, 1932416, 2022998, 2088256, 2415520, 2610320, 2658560, 3864832, 4045996, 4176512, 4831040, 5057495, 5220640, 8091992, 8353024, 9662080, 10114990, 10441280, 16183984, 19324160, 20229980, 20882560, 32367968, 40459960, 41765120, 64735936, 80919920, 129471872, 161839840, 258943744, 323679680, 647359360, 1294718720]

約数ペア:

[(1, 1294718720), (2, 647359360), (4, 323679680), (5, 258943744), (8, 161839840), (10, 129471872), (16, 80919920), (20, 64735936), (31, 41765120), (32, 40459960), (40, 32367968), (62, 20882560), (64, 20229980), (67, 19324160), (80, 16183984), (124, 10441280), (128, 10114990), (134, 9662080), (155, 8353024), (160, 8091992), (248, 5220640), (256, 5057495), (268, 4831040), (310, 4176512), (320, 4045996), (335, 3864832), (487, 2658560), (496, 2610320), (536, 2415520), (620, 2088256), (640, 2022998), (670, 1932416), (974, 1329280), (992, 1305160), (1072, 1207760), (1240, 1044128), (1280, 1011499), (1340, 966208), (1948, 664640), (1984, 652580), (2077, 623360), (2144, 603880), (2435, 531712), (2480, 522064), (2680, 483104), (3896, 332320), (3968, 326290), (4154, 311680), (4288, 301940), (4870, 265856), (4960, 261032), (5360, 241552), (7792, 166160), (7936, 163145), (8308, 155840), (8576, 150970), (9740, 132928), (9920, 130516), (10385, 124672), (10720, 120776), (15097, 85760), (15584, 83080), (16616, 77920), (17152, 75485), (19480, 66464), (19840, 65258), (20770, 62336), (21440, 60388), (30194, 42880), (31168, 41540), (32629, 39680), (33232, 38960)]