205656675

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{523}}^1$

素因数の和:657

約数の個数: 72

約数和(自身を含む): 399992256

約数和(自身を除く): 194335581

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 107, 147, 175, 245, 321, 523, 525, 535, 735, 749, 1225, 1569, 1605, 2247, 2615, 2675, 3661, 3675, 3745, 5243, 7845, 8025, 10983, 11235, 13075, 15729, 18305, 18725, 25627, 26215, 39225, 54915, 55961, 56175, 76881, 78645, 91525, 128135, 131075, 167883, 274575, 279805, 384405, 391727, 393225, 640675, 839415, 1175181, 1399025, 1922025, 1958635, 2742089, 4197075, 5875905, 8226267, 9793175, 13710445, 29379525, 41131335, 68552225, 205656675]

約数ペア:

[(1, 205656675), (3, 68552225), (5, 41131335), (7, 29379525), (15, 13710445), (21, 9793175), (25, 8226267), (35, 5875905), (49, 4197075), (75, 2742089), (105, 1958635), (107, 1922025), (147, 1399025), (175, 1175181), (245, 839415), (321, 640675), (523, 393225), (525, 391727), (535, 384405), (735, 279805), (749, 274575), (1225, 167883), (1569, 131075), (1605, 128135), (2247, 91525), (2615, 78645), (2675, 76881), (3661, 56175), (3675, 55961), (3745, 54915), (5243, 39225), (7845, 26215), (8025, 25627), (10983, 18725), (11235, 18305), (13075, 15729)]