257435906

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{28867}}^1$

素因数の和:28903

約数の個数: 32

約数和(自身を含む): 484982400

約数和(自身を除く): 227546494

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 343, 637, 686, 1274, 4459, 8918, 28867, 57734, 202069, 375271, 404138, 750542, 1414483, 2626897, 2828966, 5253794, 9901381, 18388279, 19802762, 36776558, 128717953, 257435906]

約数ペア:

[(1, 257435906), (2, 128717953), (7, 36776558), (13, 19802762), (14, 18388279), (26, 9901381), (49, 5253794), (91, 2828966), (98, 2626897), (182, 1414483), (343, 750542), (637, 404138), (686, 375271), (1274, 202069), (4459, 57734), (8918, 28867)]