28245945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20693}}^1$

素因数の和:20721

約数の個数: 32

約数和(自身を含む): 55625472

約数和(自身を除く): 27379527

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 20693, 62079, 103465, 144851, 269009, 310395, 434553, 724255, 807027, 1345045, 1883063, 2172765, 4035135, 5649189, 9415315, 28245945]

約数ペア:

[(1, 28245945), (3, 9415315), (5, 5649189), (7, 4035135), (13, 2172765), (15, 1883063), (21, 1345045), (35, 807027), (39, 724255), (65, 434553), (91, 310395), (105, 269009), (195, 144851), (273, 103465), (455, 62079), (1365, 20693)]