28540820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:501

約数の個数: 96

約数和(自身を含む): 76640256

約数和(自身を除く): 48099436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 43, 44, 55, 70, 77, 86, 110, 140, 154, 172, 215, 220, 301, 308, 385, 430, 431, 473, 602, 770, 860, 862, 946, 1204, 1505, 1540, 1724, 1892, 2155, 2365, 3010, 3017, 3311, 4310, 4730, 4741, 6020, 6034, 6622, 8620, 9460, 9482, 12068, 13244, 15085, 16555, 18533, 18964, 23705, 30170, 33110, 33187, 37066, 47410, 60340, 66220, 66374, 74132, 92665, 94820, 129731, 132748, 165935, 185330, 203863, 259462, 331870, 370660, 407726, 518924, 648655, 663740, 815452, 1019315, 1297310, 1427041, 2038630, 2594620, 2854082, 4077260, 5708164, 7135205, 14270410, 28540820]

約数ペア:

[(1, 28540820), (2, 14270410), (4, 7135205), (5, 5708164), (7, 4077260), (10, 2854082), (11, 2594620), (14, 2038630), (20, 1427041), (22, 1297310), (28, 1019315), (35, 815452), (43, 663740), (44, 648655), (55, 518924), (70, 407726), (77, 370660), (86, 331870), (110, 259462), (140, 203863), (154, 185330), (172, 165935), (215, 132748), (220, 129731), (301, 94820), (308, 92665), (385, 74132), (430, 66374), (431, 66220), (473, 60340), (602, 47410), (770, 37066), (860, 33187), (862, 33110), (946, 30170), (1204, 23705), (1505, 18964), (1540, 18533), (1724, 16555), (1892, 15085), (2155, 13244), (2365, 12068), (3010, 9482), (3017, 9460), (3311, 8620), (4310, 6622), (4730, 6034), (4741, 6020)]