64876840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{881}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 167650560

約数和(自身を除く): 102773720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 263, 280, 526, 881, 1052, 1315, 1762, 1841, 2104, 2630, 3524, 3682, 4405, 5260, 6167, 7048, 7364, 8810, 9205, 10520, 12334, 14728, 17620, 18410, 24668, 30835, 35240, 36820, 49336, 61670, 73640, 123340, 231703, 246680, 463406, 926812, 1158515, 1621921, 1853624, 2317030, 3243842, 4634060, 6487684, 8109605, 9268120, 12975368, 16219210, 32438420, 64876840]

約数ペア:

[(1, 64876840), (2, 32438420), (4, 16219210), (5, 12975368), (7, 9268120), (8, 8109605), (10, 6487684), (14, 4634060), (20, 3243842), (28, 2317030), (35, 1853624), (40, 1621921), (56, 1158515), (70, 926812), (140, 463406), (263, 246680), (280, 231703), (526, 123340), (881, 73640), (1052, 61670), (1315, 49336), (1762, 36820), (1841, 35240), (2104, 30835), (2630, 24668), (3524, 18410), (3682, 17620), (4405, 14728), (5260, 12334), (6167, 10520), (7048, 9205), (7364, 8810)]