71640940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1783}}^1$

素因数の和:1847

約数の個数: 72

約数和(自身を含む): 179377632

約数和(自身を除く): 107736692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 1783, 2009, 2870, 3566, 4018, 5740, 7132, 8036, 8915, 10045, 12481, 17830, 20090, 24962, 35660, 40180, 49924, 62405, 73103, 87367, 124810, 146206, 174734, 249620, 292412, 349468, 365515, 436835, 511721, 731030, 873670, 1023442, 1462060, 1747340, 2046884, 2558605, 3582047, 5117210, 7164094, 10234420, 14328188, 17910235, 35820470, 71640940]

約数ペア:

[(1, 71640940), (2, 35820470), (4, 17910235), (5, 14328188), (7, 10234420), (10, 7164094), (14, 5117210), (20, 3582047), (28, 2558605), (35, 2046884), (41, 1747340), (49, 1462060), (70, 1023442), (82, 873670), (98, 731030), (140, 511721), (164, 436835), (196, 365515), (205, 349468), (245, 292412), (287, 249620), (410, 174734), (490, 146206), (574, 124810), (820, 87367), (980, 73103), (1148, 62405), (1435, 49924), (1783, 40180), (2009, 35660), (2870, 24962), (3566, 20090), (4018, 17830), (5740, 12481), (7132, 10045), (8036, 8915)]