256641280

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{28643}}^1$

素因数の和:28671

約数の個数: 72

約数和(自身を含む): 702580032

約数和(自身を除く): 445938752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 4480, 8960, 28643, 57286, 114572, 143215, 200501, 229144, 286430, 401002, 458288, 572860, 802004, 916576, 1002505, 1145720, 1604008, 1833152, 2005010, 2291440, 3208016, 3666304, 4010020, 4582880, 6416032, 7332608, 8020040, 9165760, 12832064, 16040080, 18331520, 25664128, 32080160, 36663040, 51328256, 64160320, 128320640, 256641280]

約数ペア:

[(1, 256641280), (2, 128320640), (4, 64160320), (5, 51328256), (7, 36663040), (8, 32080160), (10, 25664128), (14, 18331520), (16, 16040080), (20, 12832064), (28, 9165760), (32, 8020040), (35, 7332608), (40, 6416032), (56, 4582880), (64, 4010020), (70, 3666304), (80, 3208016), (112, 2291440), (128, 2005010), (140, 1833152), (160, 1604008), (224, 1145720), (256, 1002505), (280, 916576), (320, 802004), (448, 572860), (560, 458288), (640, 401002), (896, 286430), (1120, 229144), (1280, 200501), (1792, 143215), (2240, 114572), (4480, 57286), (8960, 28643)]