81424640

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5783}}^1$

素因数の和:5815

約数の個数: 72

約数和(自身を含む): 212804928

約数和(自身を除く): 131380288

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1760, 2816, 3520, 5783, 7040, 11566, 14080, 23132, 28915, 46264, 57830, 63613, 92528, 115660, 127226, 185056, 231320, 254452, 318065, 370112, 462640, 508904, 636130, 740224, 925280, 1017808, 1272260, 1480448, 1850560, 2035616, 2544520, 3701120, 4071232, 5089040, 7402240, 8142464, 10178080, 16284928, 20356160, 40712320, 81424640]

約数ペア:

[(1, 81424640), (2, 40712320), (4, 20356160), (5, 16284928), (8, 10178080), (10, 8142464), (11, 7402240), (16, 5089040), (20, 4071232), (22, 3701120), (32, 2544520), (40, 2035616), (44, 1850560), (55, 1480448), (64, 1272260), (80, 1017808), (88, 925280), (110, 740224), (128, 636130), (160, 508904), (176, 462640), (220, 370112), (256, 318065), (320, 254452), (352, 231320), (440, 185056), (640, 127226), (704, 115660), (880, 92528), (1280, 63613), (1408, 57830), (1760, 46264), (2816, 28915), (3520, 23132), (5783, 14080), (7040, 11566)]