398831810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{19541}}^1$

素因数の和:19718

約数の個数: 32

約数和(自身を含む): 778084272

約数和(自身を除く): 379252462

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 1570, 2041, 4082, 10205, 19541, 20410, 39082, 97705, 195410, 254033, 508066, 1270165, 2540330, 3067937, 6135874, 15339685, 30679370, 39883181, 79766362, 199415905, 398831810]

約数ペア:

[(1, 398831810), (2, 199415905), (5, 79766362), (10, 39883181), (13, 30679370), (26, 15339685), (65, 6135874), (130, 3067937), (157, 2540330), (314, 1270165), (785, 508066), (1570, 254033), (2041, 195410), (4082, 97705), (10205, 39082), (19541, 20410)]