20438470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157219}}^1$

素因数の和:157239

約数の個数: 16

約数和(自身を含む): 39619440

約数和(自身を除く): 19180970

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157219, 314438, 786095, 1572190, 2043847, 4087694, 10219235, 20438470]

約数ペア:

[(1, 20438470), (2, 10219235), (5, 4087694), (10, 2043847), (13, 1572190), (26, 786095), (65, 314438), (130, 157219)]