16787420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{64567}}^1$

素因数の和:64589

約数の個数: 24

約数和(自身を含む): 37965984

約数和(自身を除く): 21178564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 64567, 129134, 258268, 322835, 645670, 839371, 1291340, 1678742, 3357484, 4196855, 8393710, 16787420]

約数ペア:

[(1, 16787420), (2, 8393710), (4, 4196855), (5, 3357484), (10, 1678742), (13, 1291340), (20, 839371), (26, 645670), (52, 322835), (65, 258268), (130, 129134), (260, 64567)]