642005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:125

約数の個数: 32

約数和(自身を含む): 1016064

約数和(自身を除く): 374059

約数列:

[1, 5, 7, 13, 17, 35, 65, 83, 85, 91, 119, 221, 415, 455, 581, 595, 1079, 1105, 1411, 1547, 2905, 5395, 7055, 7553, 7735, 9877, 18343, 37765, 49385, 91715, 128401, 642005]

約数ペア:

[(1, 642005), (5, 128401), (7, 91715), (13, 49385), (17, 37765), (35, 18343), (65, 9877), (83, 7735), (85, 7553), (91, 7055), (119, 5395), (221, 2905), (415, 1547), (455, 1411), (581, 1105), (595, 1079)]