278520320

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8369}}^1$

素因数の和:8405

約数の個数: 80

約数和(自身を含む): 719250840

約数和(自身を除く): 440730520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2560, 3328, 4160, 6656, 8320, 8369, 16640, 16738, 33280, 33476, 41845, 66952, 83690, 108797, 133904, 167380, 217594, 267808, 334760, 435188, 535616, 543985, 669520, 870376, 1071232, 1087970, 1339040, 1740752, 2142464, 2175940, 2678080, 3481504, 4284928, 4351880, 5356160, 6963008, 8703760, 10712320, 13926016, 17407520, 21424640, 27852032, 34815040, 55704064, 69630080, 139260160, 278520320]

約数ペア:

[(1, 278520320), (2, 139260160), (4, 69630080), (5, 55704064), (8, 34815040), (10, 27852032), (13, 21424640), (16, 17407520), (20, 13926016), (26, 10712320), (32, 8703760), (40, 6963008), (52, 5356160), (64, 4351880), (65, 4284928), (80, 3481504), (104, 2678080), (128, 2175940), (130, 2142464), (160, 1740752), (208, 1339040), (256, 1087970), (260, 1071232), (320, 870376), (416, 669520), (512, 543985), (520, 535616), (640, 435188), (832, 334760), (1040, 267808), (1280, 217594), (1664, 167380), (2080, 133904), (2560, 108797), (3328, 83690), (4160, 66952), (6656, 41845), (8320, 33476), (8369, 33280), (16640, 16738)]