28708449

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 52101120

約数和(自身を除く): 23392671

約数列:

[1, 3, 7, 11, 19, 21, 31, 33, 57, 77, 93, 133, 209, 211, 217, 231, 341, 399, 589, 627, 633, 651, 1023, 1463, 1477, 1767, 2321, 2387, 4009, 4123, 4389, 4431, 6479, 6541, 6963, 7161, 12027, 12369, 16247, 19437, 19623, 28063, 44099, 45353, 45787, 48741, 71951, 84189, 124279, 132297, 136059, 137361, 215853, 308693, 372837, 503657, 869953, 926079, 1367069, 1510971, 2609859, 4101207, 9569483, 28708449]

約数ペア:

[(1, 28708449), (3, 9569483), (7, 4101207), (11, 2609859), (19, 1510971), (21, 1367069), (31, 926079), (33, 869953), (57, 503657), (77, 372837), (93, 308693), (133, 215853), (209, 137361), (211, 136059), (217, 132297), (231, 124279), (341, 84189), (399, 71951), (589, 48741), (627, 45787), (633, 45353), (651, 44099), (1023, 28063), (1463, 19623), (1477, 19437), (1767, 16247), (2321, 12369), (2387, 12027), (4009, 7161), (4123, 6963), (4389, 6541), (4431, 6479)]