21160945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 28651392

約数和(自身を除く): 7490447

約数列:

[1, 5, 13, 43, 65, 67, 113, 215, 335, 559, 565, 871, 1469, 2795, 2881, 4355, 4859, 7345, 7571, 14405, 24295, 37453, 37855, 63167, 98423, 187265, 315835, 325553, 492115, 1627765, 4232189, 21160945]

約数ペア:

[(1, 21160945), (5, 4232189), (13, 1627765), (43, 492115), (65, 325553), (67, 315835), (113, 187265), (215, 98423), (335, 63167), (559, 37855), (565, 37453), (871, 24295), (1469, 14405), (2795, 7571), (2881, 7345), (4355, 4859)]