40666640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{719}}^1$

素因数の和:840

約数の個数: 80

約数和(自身を含む): 109278720

約数和(自身を除く): 68612080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 505, 560, 707, 719, 808, 1010, 1414, 1438, 1616, 2020, 2828, 2876, 3535, 3595, 4040, 5033, 5656, 5752, 7070, 7190, 8080, 10066, 11312, 11504, 14140, 14380, 20132, 25165, 28280, 28760, 40264, 50330, 56560, 57520, 72619, 80528, 100660, 145238, 201320, 290476, 363095, 402640, 508333, 580952, 726190, 1016666, 1161904, 1452380, 2033332, 2541665, 2904760, 4066664, 5083330, 5809520, 8133328, 10166660, 20333320, 40666640]

約数ペア:

[(1, 40666640), (2, 20333320), (4, 10166660), (5, 8133328), (7, 5809520), (8, 5083330), (10, 4066664), (14, 2904760), (16, 2541665), (20, 2033332), (28, 1452380), (35, 1161904), (40, 1016666), (56, 726190), (70, 580952), (80, 508333), (101, 402640), (112, 363095), (140, 290476), (202, 201320), (280, 145238), (404, 100660), (505, 80528), (560, 72619), (707, 57520), (719, 56560), (808, 50330), (1010, 40264), (1414, 28760), (1438, 28280), (1616, 25165), (2020, 20132), (2828, 14380), (2876, 14140), (3535, 11504), (3595, 11312), (4040, 10066), (5033, 8080), (5656, 7190), (5752, 7070)]