81025840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3529}}^1$

素因数の和:3590

約数の個数: 80

約数和(自身を含む): 220610880

約数和(自身を除く): 139585040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 1148, 1435, 1640, 2296, 2870, 3280, 3529, 4592, 5740, 7058, 11480, 14116, 17645, 22960, 24703, 28232, 35290, 49406, 56464, 70580, 98812, 123515, 141160, 144689, 197624, 247030, 282320, 289378, 395248, 494060, 578756, 723445, 988120, 1012823, 1157512, 1446890, 1976240, 2025646, 2315024, 2893780, 4051292, 5064115, 5787560, 8102584, 10128230, 11575120, 16205168, 20256460, 40512920, 81025840]

約数ペア:

[(1, 81025840), (2, 40512920), (4, 20256460), (5, 16205168), (7, 11575120), (8, 10128230), (10, 8102584), (14, 5787560), (16, 5064115), (20, 4051292), (28, 2893780), (35, 2315024), (40, 2025646), (41, 1976240), (56, 1446890), (70, 1157512), (80, 1012823), (82, 988120), (112, 723445), (140, 578756), (164, 494060), (205, 395248), (280, 289378), (287, 282320), (328, 247030), (410, 197624), (560, 144689), (574, 141160), (656, 123515), (820, 98812), (1148, 70580), (1435, 56464), (1640, 49406), (2296, 35290), (2870, 28232), (3280, 24703), (3529, 22960), (4592, 17645), (5740, 14116), (7058, 11480)]