16854280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 23062520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 239, 328, 344, 410, 430, 478, 820, 860, 956, 1195, 1640, 1720, 1763, 1912, 2390, 3526, 4780, 7052, 8815, 9560, 9799, 10277, 14104, 17630, 19598, 20554, 35260, 39196, 41108, 48995, 51385, 70520, 78392, 82216, 97990, 102770, 195980, 205540, 391960, 411080, 421357, 842714, 1685428, 2106785, 3370856, 4213570, 8427140, 16854280]

約数ペア:

[(1, 16854280), (2, 8427140), (4, 4213570), (5, 3370856), (8, 2106785), (10, 1685428), (20, 842714), (40, 421357), (41, 411080), (43, 391960), (82, 205540), (86, 195980), (164, 102770), (172, 97990), (205, 82216), (215, 78392), (239, 70520), (328, 51385), (344, 48995), (410, 41108), (430, 39196), (478, 35260), (820, 20554), (860, 19598), (956, 17630), (1195, 14104), (1640, 10277), (1720, 9799), (1763, 9560), (1912, 8815), (2390, 7052), (3526, 4780)]