28595931

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 51072000

約数和(自身を除く): 22476069

約数列:

[1, 3, 7, 13, 19, 21, 37, 39, 57, 91, 111, 133, 149, 247, 259, 273, 399, 447, 481, 703, 741, 777, 1043, 1443, 1729, 1937, 2109, 2831, 3129, 3367, 4921, 5187, 5513, 5811, 8493, 9139, 10101, 13559, 14763, 16539, 19817, 27417, 36803, 38591, 40677, 59451, 63973, 71669, 104747, 110409, 115773, 191919, 215007, 257621, 314241, 501683, 733229, 772863, 1361711, 1505049, 2199687, 4085133, 9531977, 28595931]

約数ペア:

[(1, 28595931), (3, 9531977), (7, 4085133), (13, 2199687), (19, 1505049), (21, 1361711), (37, 772863), (39, 733229), (57, 501683), (91, 314241), (111, 257621), (133, 215007), (149, 191919), (247, 115773), (259, 110409), (273, 104747), (399, 71669), (447, 63973), (481, 59451), (703, 40677), (741, 38591), (777, 36803), (1043, 27417), (1443, 19817), (1729, 16539), (1937, 14763), (2109, 13559), (2831, 10101), (3129, 9139), (3367, 8493), (4921, 5811), (5187, 5513)]