31990155

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 52550400

約数和(自身を除く): 20560245

約数列:

[1, 3, 5, 15, 67, 139, 201, 229, 335, 417, 687, 695, 1005, 1145, 2085, 3435, 9313, 15343, 27939, 31831, 46029, 46565, 76715, 95493, 139695, 159155, 230145, 477465, 2132677, 6398031, 10663385, 31990155]

約数ペア:

[(1, 31990155), (3, 10663385), (5, 6398031), (15, 2132677), (67, 477465), (139, 230145), (201, 159155), (229, 139695), (335, 95493), (417, 76715), (687, 46565), (695, 46029), (1005, 31831), (1145, 27939), (2085, 15343), (3435, 9313)]