128408973

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1721}}^1$

素因数の和:1778

約数の個数: 64

約数和(自身を含む): 238049280

約数和(自身を除く): 109640307

約数列:

[1, 3, 7, 11, 17, 19, 21, 33, 51, 57, 77, 119, 133, 187, 209, 231, 323, 357, 399, 561, 627, 969, 1309, 1463, 1721, 2261, 3553, 3927, 4389, 5163, 6783, 10659, 12047, 18931, 24871, 29257, 32699, 36141, 56793, 74613, 87771, 98097, 132517, 204799, 228893, 321827, 359689, 397551, 555883, 614397, 686679, 965481, 1079067, 1667649, 2252789, 2517823, 3891181, 6114713, 6758367, 7553469, 11673543, 18344139, 42802991, 128408973]

約数ペア:

[(1, 128408973), (3, 42802991), (7, 18344139), (11, 11673543), (17, 7553469), (19, 6758367), (21, 6114713), (33, 3891181), (51, 2517823), (57, 2252789), (77, 1667649), (119, 1079067), (133, 965481), (187, 686679), (209, 614397), (231, 555883), (323, 397551), (357, 359689), (399, 321827), (561, 228893), (627, 204799), (969, 132517), (1309, 98097), (1463, 87771), (1721, 74613), (2261, 56793), (3553, 36141), (3927, 32699), (4389, 29257), (5163, 24871), (6783, 18931), (10659, 12047)]