20987213

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1$

素因数の和:532

約数の個数: 16

約数和(自身を含む): 23587200

約数和(自身を除く): 2599987

約数列:

[1, 13, 29, 179, 311, 377, 2327, 4043, 5191, 9019, 55669, 67483, 117247, 723697, 1614401, 20987213]

約数ペア:

[(1, 20987213), (13, 1614401), (29, 723697), (179, 117247), (311, 67483), (377, 55669), (2327, 9019), (4043, 5191)]