78687140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3491}}^1$

素因数の和:3537

約数の個数: 72

約数和(自身を含む): 200636352

約数和(自身を除く): 121949212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 2254, 3220, 3491, 4508, 5635, 6982, 11270, 13964, 17455, 22540, 24437, 34910, 48874, 69820, 80293, 97748, 122185, 160586, 171059, 244370, 321172, 342118, 401465, 488740, 562051, 684236, 802930, 855295, 1124102, 1605860, 1710590, 2248204, 2810255, 3421180, 3934357, 5620510, 7868714, 11241020, 15737428, 19671785, 39343570, 78687140]

約数ペア:

[(1, 78687140), (2, 39343570), (4, 19671785), (5, 15737428), (7, 11241020), (10, 7868714), (14, 5620510), (20, 3934357), (23, 3421180), (28, 2810255), (35, 2248204), (46, 1710590), (49, 1605860), (70, 1124102), (92, 855295), (98, 802930), (115, 684236), (140, 562051), (161, 488740), (196, 401465), (230, 342118), (245, 321172), (322, 244370), (460, 171059), (490, 160586), (644, 122185), (805, 97748), (980, 80293), (1127, 69820), (1610, 48874), (2254, 34910), (3220, 24437), (3491, 22540), (4508, 17455), (5635, 13964), (6982, 11270)]