20781777

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{4507}}^1$

素因数の和:4592

約数の個数: 16

約数和(自身を含む): 29211840

約数和(自身を除く): 8430063

約数列:

[1, 3, 29, 53, 87, 159, 1537, 4507, 4611, 13521, 130703, 238871, 392109, 716613, 6927259, 20781777]

約数ペア:

[(1, 20781777), (3, 6927259), (29, 716613), (53, 392109), (87, 238871), (159, 130703), (1537, 13521), (4507, 4611)]