81316972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 160876800

約数和(自身を除く): 79559828

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 199, 251, 398, 407, 502, 796, 814, 1004, 1628, 2189, 2761, 4378, 5522, 7363, 8756, 9287, 11044, 14726, 18574, 29452, 37148, 49949, 80993, 99898, 102157, 161986, 199796, 204314, 323972, 408628, 549439, 1098878, 1848113, 2197756, 3696226, 7392452, 20329243, 40658486, 81316972]

約数ペア:

[(1, 81316972), (2, 40658486), (4, 20329243), (11, 7392452), (22, 3696226), (37, 2197756), (44, 1848113), (74, 1098878), (148, 549439), (199, 408628), (251, 323972), (398, 204314), (407, 199796), (502, 161986), (796, 102157), (814, 99898), (1004, 80993), (1628, 49949), (2189, 37148), (2761, 29452), (4378, 18574), (5522, 14726), (7363, 11044), (8756, 9287)]