291240261

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 469188720

約数和(自身を除く): 177948459

約数列:

[1, 3, 9, 13, 39, 41, 109, 117, 123, 327, 369, 533, 557, 981, 1417, 1599, 1671, 4251, 4469, 4797, 5013, 7241, 12753, 13407, 21723, 22837, 40221, 58097, 60713, 65169, 68511, 174291, 182139, 205533, 296881, 522873, 546417, 789269, 890643, 2367807, 2489233, 2671929, 7103421, 7467699, 22403097, 32360029, 97080087, 291240261]

約数ペア:

[(1, 291240261), (3, 97080087), (9, 32360029), (13, 22403097), (39, 7467699), (41, 7103421), (109, 2671929), (117, 2489233), (123, 2367807), (327, 890643), (369, 789269), (533, 546417), (557, 522873), (981, 296881), (1417, 205533), (1599, 182139), (1671, 174291), (4251, 68511), (4469, 65169), (4797, 60713), (5013, 58097), (7241, 40221), (12753, 22837), (13407, 21723)]