81840920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7129}}^1$

素因数の和:7188

約数の個数: 64

約数和(自身を含む): 215611200

約数和(自身を除く): 133770280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 2296, 2870, 5740, 7129, 11480, 14258, 28516, 35645, 49903, 57032, 71290, 99806, 142580, 199612, 249515, 285160, 292289, 399224, 499030, 584578, 998060, 1169156, 1461445, 1996120, 2046023, 2338312, 2922890, 4092046, 5845780, 8184092, 10230115, 11691560, 16368184, 20460230, 40920460, 81840920]

約数ペア:

[(1, 81840920), (2, 40920460), (4, 20460230), (5, 16368184), (7, 11691560), (8, 10230115), (10, 8184092), (14, 5845780), (20, 4092046), (28, 2922890), (35, 2338312), (40, 2046023), (41, 1996120), (56, 1461445), (70, 1169156), (82, 998060), (140, 584578), (164, 499030), (205, 399224), (280, 292289), (287, 285160), (328, 249515), (410, 199612), (574, 142580), (820, 99806), (1148, 71290), (1435, 57032), (1640, 49903), (2296, 35645), (2870, 28516), (5740, 14258), (7129, 11480)]