1721505

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 3003264

約数和(自身を除く): 1281759

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 157, 215, 255, 471, 645, 731, 785, 2193, 2355, 2669, 3655, 6751, 8007, 10965, 13345, 20253, 33755, 40035, 101265, 114767, 344301, 573835, 1721505]

約数ペア:

[(1, 1721505), (3, 573835), (5, 344301), (15, 114767), (17, 101265), (43, 40035), (51, 33755), (85, 20253), (129, 13345), (157, 10965), (215, 8007), (255, 6751), (471, 3655), (645, 2669), (731, 2355), (785, 2193)]