28381540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:193

約数の個数: 96

約数和(自身を含む): 69672960

約数和(自身を除く): 41291420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 71, 79, 92, 110, 115, 142, 158, 220, 230, 253, 284, 316, 355, 395, 460, 506, 710, 781, 790, 869, 1012, 1265, 1420, 1562, 1580, 1633, 1738, 1817, 2530, 3124, 3266, 3476, 3634, 3905, 4345, 5060, 5609, 6532, 7268, 7810, 8165, 8690, 9085, 11218, 15620, 16330, 17380, 17963, 18170, 19987, 22436, 28045, 32660, 35926, 36340, 39974, 56090, 61699, 71852, 79948, 89815, 99935, 112180, 123398, 129007, 179630, 199870, 246796, 258014, 308495, 359260, 399740, 516028, 616990, 645035, 1233980, 1290070, 1419077, 2580140, 2838154, 5676308, 7095385, 14190770, 28381540]

約数ペア:

[(1, 28381540), (2, 14190770), (4, 7095385), (5, 5676308), (10, 2838154), (11, 2580140), (20, 1419077), (22, 1290070), (23, 1233980), (44, 645035), (46, 616990), (55, 516028), (71, 399740), (79, 359260), (92, 308495), (110, 258014), (115, 246796), (142, 199870), (158, 179630), (220, 129007), (230, 123398), (253, 112180), (284, 99935), (316, 89815), (355, 79948), (395, 71852), (460, 61699), (506, 56090), (710, 39974), (781, 36340), (790, 35926), (869, 32660), (1012, 28045), (1265, 22436), (1420, 19987), (1562, 18170), (1580, 17963), (1633, 17380), (1738, 16330), (1817, 15620), (2530, 11218), (3124, 9085), (3266, 8690), (3476, 8165), (3634, 7810), (3905, 7268), (4345, 6532), (5060, 5609)]