20931365

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{257}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 10276315

約数列:

[1, 5, 7, 13, 35, 65, 91, 179, 257, 455, 895, 1253, 1285, 1799, 2327, 3341, 6265, 8995, 11635, 16289, 16705, 23387, 46003, 81445, 116935, 230015, 322021, 598039, 1610105, 2990195, 4186273, 20931365]

約数ペア:

[(1, 20931365), (5, 4186273), (7, 2990195), (13, 1610105), (35, 598039), (65, 322021), (91, 230015), (179, 116935), (257, 81445), (455, 46003), (895, 23387), (1253, 16705), (1285, 16289), (1799, 11635), (2327, 8995), (3341, 6265)]