21378933

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 34777600

約数和(自身を除く): 13398667

約数列:

[1, 3, 9, 19, 31, 37, 57, 93, 109, 111, 171, 279, 327, 333, 589, 703, 981, 1147, 1767, 2071, 2109, 3379, 3441, 4033, 5301, 6213, 6327, 10137, 10323, 12099, 18639, 21793, 30411, 36297, 64201, 65379, 76627, 125023, 192603, 196137, 229881, 375069, 577809, 689643, 1125207, 2375437, 7126311, 21378933]

約数ペア:

[(1, 21378933), (3, 7126311), (9, 2375437), (19, 1125207), (31, 689643), (37, 577809), (57, 375069), (93, 229881), (109, 196137), (111, 192603), (171, 125023), (279, 76627), (327, 65379), (333, 64201), (589, 36297), (703, 30411), (981, 21793), (1147, 18639), (1767, 12099), (2071, 10323), (2109, 10137), (3379, 6327), (3441, 6213), (4033, 5301)]