42990189

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 64941696

約数和(自身を除く): 21951507

約数列:

[1, 3, 11, 33, 37, 111, 137, 257, 407, 411, 771, 1221, 1507, 2827, 4521, 5069, 8481, 9509, 15207, 28527, 35209, 55759, 104599, 105627, 167277, 313797, 387299, 1161897, 1302733, 3908199, 14330063, 42990189]

約数ペア:

[(1, 42990189), (3, 14330063), (11, 3908199), (33, 1302733), (37, 1161897), (111, 387299), (137, 313797), (257, 167277), (407, 105627), (411, 104599), (771, 55759), (1221, 35209), (1507, 28527), (2827, 15207), (4521, 9509), (5069, 8481)]