81167128

素因数分解:

$2^3\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2621}}^1$

素因数の和:2720

約数の個数: 48

約数和(自身を含む): 179344800

約数和(自身を除く): 98177672

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 79, 98, 158, 196, 316, 392, 553, 632, 1106, 2212, 2621, 3871, 4424, 5242, 7742, 10484, 15484, 18347, 20968, 30968, 36694, 73388, 128429, 146776, 207059, 256858, 414118, 513716, 828236, 1027432, 1449413, 1656472, 2898826, 5797652, 10145891, 11595304, 20291782, 40583564, 81167128]

約数ペア:

[(1, 81167128), (2, 40583564), (4, 20291782), (7, 11595304), (8, 10145891), (14, 5797652), (28, 2898826), (49, 1656472), (56, 1449413), (79, 1027432), (98, 828236), (158, 513716), (196, 414118), (316, 256858), (392, 207059), (553, 146776), (632, 128429), (1106, 73388), (2212, 36694), (2621, 30968), (3871, 20968), (4424, 18347), (5242, 15484), (7742, 10484)]