64645840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{479}}^1$

素因数の和:740

約数の個数: 80

約数和(自身を含む): 172846080

約数和(自身を除く): 108200240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 241, 280, 479, 482, 560, 958, 964, 1205, 1687, 1916, 1928, 2395, 2410, 3353, 3374, 3832, 3856, 4790, 4820, 6706, 6748, 7664, 8435, 9580, 9640, 13412, 13496, 16765, 16870, 19160, 19280, 26824, 26992, 33530, 33740, 38320, 53648, 67060, 67480, 115439, 134120, 134960, 230878, 268240, 461756, 577195, 808073, 923512, 1154390, 1616146, 1847024, 2308780, 3232292, 4040365, 4617560, 6464584, 8080730, 9235120, 12929168, 16161460, 32322920, 64645840]

約数ペア:

[(1, 64645840), (2, 32322920), (4, 16161460), (5, 12929168), (7, 9235120), (8, 8080730), (10, 6464584), (14, 4617560), (16, 4040365), (20, 3232292), (28, 2308780), (35, 1847024), (40, 1616146), (56, 1154390), (70, 923512), (80, 808073), (112, 577195), (140, 461756), (241, 268240), (280, 230878), (479, 134960), (482, 134120), (560, 115439), (958, 67480), (964, 67060), (1205, 53648), (1687, 38320), (1916, 33740), (1928, 33530), (2395, 26992), (2410, 26824), (3353, 19280), (3374, 19160), (3832, 16870), (3856, 16765), (4790, 13496), (4820, 13412), (6706, 9640), (6748, 9580), (7664, 8435)]