201568120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{387631}}^1$

素因数の和:387655

約数の個数: 32

約数和(自身を含む): 488416320

約数和(自身を除く): 286848200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 387631, 775262, 1550524, 1938155, 3101048, 3876310, 5039203, 7752620, 10078406, 15505240, 20156812, 25196015, 40313624, 50392030, 100784060, 201568120]

約数ペア:

[(1, 201568120), (2, 100784060), (4, 50392030), (5, 40313624), (8, 25196015), (10, 20156812), (13, 15505240), (20, 10078406), (26, 7752620), (40, 5039203), (52, 3876310), (65, 3101048), (104, 1938155), (130, 1550524), (260, 775262), (520, 387631)]