213804981

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 355971840

約数和(自身を除く): 142166859

約数列:

[1, 3, 9, 13, 27, 37, 39, 101, 111, 117, 163, 303, 333, 351, 481, 489, 909, 999, 1313, 1443, 1467, 2119, 2727, 3737, 3939, 4329, 4401, 6031, 6357, 11211, 11817, 12987, 16463, 18093, 19071, 33633, 35451, 48581, 49389, 54279, 57213, 78403, 100899, 145743, 148167, 162837, 214019, 235209, 437229, 444501, 609131, 642057, 705627, 1311687, 1827393, 1926171, 2116881, 5482179, 5778513, 7918703, 16446537, 23756109, 71268327, 213804981]

約数ペア:

[(1, 213804981), (3, 71268327), (9, 23756109), (13, 16446537), (27, 7918703), (37, 5778513), (39, 5482179), (101, 2116881), (111, 1926171), (117, 1827393), (163, 1311687), (303, 705627), (333, 642057), (351, 609131), (481, 444501), (489, 437229), (909, 235209), (999, 214019), (1313, 162837), (1443, 148167), (1467, 145743), (2119, 100899), (2727, 78403), (3737, 57213), (3939, 54279), (4329, 49389), (4401, 48581), (6031, 35451), (6357, 33633), (11211, 19071), (11817, 18093), (12987, 16463)]