28215726

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:569

約数の個数: 64

約数和(自身を含む): 70986240

約数和(自身を除く): 42770514

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 157, 231, 314, 389, 462, 471, 778, 942, 1099, 1167, 1727, 2198, 2334, 2723, 3297, 3454, 4279, 5181, 5446, 6594, 8169, 8558, 10362, 12089, 12837, 16338, 24178, 25674, 29953, 36267, 59906, 61073, 72534, 89859, 122146, 179718, 183219, 366438, 427511, 671803, 855022, 1282533, 1343606, 2015409, 2565066, 4030818, 4702621, 9405242, 14107863, 28215726]

約数ペア:

[(1, 28215726), (2, 14107863), (3, 9405242), (6, 4702621), (7, 4030818), (11, 2565066), (14, 2015409), (21, 1343606), (22, 1282533), (33, 855022), (42, 671803), (66, 427511), (77, 366438), (154, 183219), (157, 179718), (231, 122146), (314, 89859), (389, 72534), (462, 61073), (471, 59906), (778, 36267), (942, 29953), (1099, 25674), (1167, 24178), (1727, 16338), (2198, 12837), (2334, 12089), (2723, 10362), (3297, 8558), (3454, 8169), (4279, 6594), (5181, 5446)]