821470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 32

約数和(自身を含む): 1632960

約数和(自身を除く): 811490

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 89, 130, 142, 178, 355, 445, 710, 890, 923, 1157, 1846, 2314, 4615, 5785, 6319, 9230, 11570, 12638, 31595, 63190, 82147, 164294, 410735, 821470]

約数ペア:

[(1, 821470), (2, 410735), (5, 164294), (10, 82147), (13, 63190), (26, 31595), (65, 12638), (71, 11570), (89, 9230), (130, 6319), (142, 5785), (178, 4615), (355, 2314), (445, 1846), (710, 1157), (890, 923)]