28055780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 96

約数和(自身を含む): 67858560

約数和(自身を除く): 39802780

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 43, 68, 76, 85, 86, 95, 101, 170, 172, 190, 202, 215, 323, 340, 380, 404, 430, 505, 646, 731, 817, 860, 1010, 1292, 1462, 1615, 1634, 1717, 1919, 2020, 2924, 3230, 3268, 3434, 3655, 3838, 4085, 4343, 6460, 6868, 7310, 7676, 8170, 8585, 8686, 9595, 13889, 14620, 16340, 17170, 17372, 19190, 21715, 27778, 32623, 34340, 38380, 43430, 55556, 65246, 69445, 73831, 82517, 86860, 130492, 138890, 147662, 163115, 165034, 277780, 295324, 326230, 330068, 369155, 412585, 652460, 738310, 825170, 1402789, 1476620, 1650340, 2805578, 5611156, 7013945, 14027890, 28055780]

約数ペア:

[(1, 28055780), (2, 14027890), (4, 7013945), (5, 5611156), (10, 2805578), (17, 1650340), (19, 1476620), (20, 1402789), (34, 825170), (38, 738310), (43, 652460), (68, 412585), (76, 369155), (85, 330068), (86, 326230), (95, 295324), (101, 277780), (170, 165034), (172, 163115), (190, 147662), (202, 138890), (215, 130492), (323, 86860), (340, 82517), (380, 73831), (404, 69445), (430, 65246), (505, 55556), (646, 43430), (731, 38380), (817, 34340), (860, 32623), (1010, 27778), (1292, 21715), (1462, 19190), (1615, 17372), (1634, 17170), (1717, 16340), (1919, 14620), (2020, 13889), (2924, 9595), (3230, 8686), (3268, 8585), (3434, 8170), (3655, 7676), (3838, 7310), (4085, 6868), (4343, 6460)]