77990360

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{39791}}^1$

素因数の和:39816

約数の個数: 48

約数和(自身を含む): 204132960

約数和(自身を除く): 126142600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 39791, 79582, 159164, 198955, 278537, 318328, 397910, 557074, 795820, 1114148, 1392685, 1591640, 1949759, 2228296, 2785370, 3899518, 5570740, 7799036, 9748795, 11141480, 15598072, 19497590, 38995180, 77990360]

約数ペア:

[(1, 77990360), (2, 38995180), (4, 19497590), (5, 15598072), (7, 11141480), (8, 9748795), (10, 7799036), (14, 5570740), (20, 3899518), (28, 2785370), (35, 2228296), (40, 1949759), (49, 1591640), (56, 1392685), (70, 1114148), (98, 795820), (140, 557074), (196, 397910), (245, 318328), (280, 278537), (392, 198955), (490, 159164), (980, 79582), (1960, 39791)]