31278639

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 49144320

約数和(自身を除く): 17865681

約数列:

[1, 3, 7, 21, 53, 157, 159, 179, 371, 471, 537, 1099, 1113, 1253, 3297, 3759, 8321, 9487, 24963, 28103, 28461, 58247, 66409, 84309, 174741, 196721, 199227, 590163, 1489459, 4468377, 10426213, 31278639]

約数ペア:

[(1, 31278639), (3, 10426213), (7, 4468377), (21, 1489459), (53, 590163), (157, 199227), (159, 196721), (179, 174741), (371, 84309), (471, 66409), (537, 58247), (1099, 28461), (1113, 28103), (1253, 24963), (3297, 9487), (3759, 8321)]