81216640

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6679}}^1$

素因数の和:6717

約数の個数: 64

約数和(自身を含む): 204408000

約数和(自身を除く): 123191360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 2432, 3040, 6080, 6679, 12160, 13358, 26716, 33395, 53432, 66790, 106864, 126901, 133580, 213728, 253802, 267160, 427456, 507604, 534320, 634505, 854912, 1015208, 1068640, 1269010, 2030416, 2137280, 2538020, 4060832, 4274560, 5076040, 8121664, 10152080, 16243328, 20304160, 40608320, 81216640]

約数ペア:

[(1, 81216640), (2, 40608320), (4, 20304160), (5, 16243328), (8, 10152080), (10, 8121664), (16, 5076040), (19, 4274560), (20, 4060832), (32, 2538020), (38, 2137280), (40, 2030416), (64, 1269010), (76, 1068640), (80, 1015208), (95, 854912), (128, 634505), (152, 534320), (160, 507604), (190, 427456), (304, 267160), (320, 253802), (380, 213728), (608, 133580), (640, 126901), (760, 106864), (1216, 66790), (1520, 53432), (2432, 33395), (3040, 26716), (6080, 13358), (6679, 12160)]