28657680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1231}}^1$

素因数の和:1344

約数の個数: 80

約数和(自身を含む): 89827584

約数和(自身を除く): 61169904

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 970, 1164, 1231, 1455, 1552, 1940, 2328, 2462, 2910, 3693, 3880, 4656, 4924, 5820, 6155, 7386, 7760, 9848, 11640, 12310, 14772, 18465, 19696, 23280, 24620, 29544, 36930, 49240, 59088, 73860, 98480, 119407, 147720, 238814, 295440, 358221, 477628, 597035, 716442, 955256, 1194070, 1432884, 1791105, 1910512, 2388140, 2865768, 3582210, 4776280, 5731536, 7164420, 9552560, 14328840, 28657680]

約数ペア:

[(1, 28657680), (2, 14328840), (3, 9552560), (4, 7164420), (5, 5731536), (6, 4776280), (8, 3582210), (10, 2865768), (12, 2388140), (15, 1910512), (16, 1791105), (20, 1432884), (24, 1194070), (30, 955256), (40, 716442), (48, 597035), (60, 477628), (80, 358221), (97, 295440), (120, 238814), (194, 147720), (240, 119407), (291, 98480), (388, 73860), (485, 59088), (582, 49240), (776, 36930), (970, 29544), (1164, 24620), (1231, 23280), (1455, 19696), (1552, 18465), (1940, 14772), (2328, 12310), (2462, 11640), (2910, 9848), (3693, 7760), (3880, 7386), (4656, 6155), (4924, 5820)]