40205.000000

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 1640520

約数和(自身を除く): 959920

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 83, 100, 164, 166, 200, 205, 328, 332, 410, 415, 664, 820, 830, 1025, 1640, 1660, 2050, 2075, 3320, 3403, 4100, 4150, 6806, 8200, 8300, 13612, 16600, 17015, 27224, 34030, 68060, 85075, 136120, 170150, 340300, 680600]

約数ペア:

[(1, 680600), (2, 340300), (4, 170150), (5, 136120), (8, 85075), (10, 68060), (20, 34030), (25, 27224), (40, 17015), (41, 16600), (50, 13612), (82, 8300), (83, 8200), (100, 6806), (164, 4150), (166, 4100), (200, 3403), (205, 3320), (328, 2075), (332, 2050), (410, 1660), (415, 1640), (664, 1025), (820, 830)]