28182567

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 49029120

約数和(自身を除く): 20846553

約数列:

[1, 3, 7, 19, 21, 23, 37, 57, 69, 83, 111, 133, 161, 249, 259, 399, 437, 483, 581, 703, 777, 851, 1311, 1577, 1743, 1909, 2109, 2553, 3059, 3071, 4731, 4921, 5727, 5957, 9177, 9213, 11039, 13363, 14763, 16169, 17871, 21497, 33117, 36271, 40089, 48507, 58349, 64491, 70633, 108813, 113183, 175047, 211899, 253897, 339549, 408443, 494431, 761691, 1225329, 1342027, 1483293, 4026081, 9394189, 28182567]

約数ペア:

[(1, 28182567), (3, 9394189), (7, 4026081), (19, 1483293), (21, 1342027), (23, 1225329), (37, 761691), (57, 494431), (69, 408443), (83, 339549), (111, 253897), (133, 211899), (161, 175047), (249, 113183), (259, 108813), (399, 70633), (437, 64491), (483, 58349), (581, 48507), (703, 40089), (777, 36271), (851, 33117), (1311, 21497), (1577, 17871), (1743, 16169), (1909, 14763), (2109, 13363), (2553, 11039), (3059, 9213), (3071, 9177), (4731, 5957), (4921, 5727)]