2857790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 5929200

約数和(自身を除く): 3071410

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 89, 95, 130, 169, 178, 190, 247, 338, 445, 494, 845, 890, 1157, 1235, 1690, 1691, 2314, 2470, 3211, 3382, 5785, 6422, 8455, 11570, 15041, 16055, 16910, 21983, 30082, 32110, 43966, 75205, 109915, 150410, 219830, 285779, 571558, 1428895, 2857790]

約数ペア:

[(1, 2857790), (2, 1428895), (5, 571558), (10, 285779), (13, 219830), (19, 150410), (26, 109915), (38, 75205), (65, 43966), (89, 32110), (95, 30082), (130, 21983), (169, 16910), (178, 16055), (190, 15041), (247, 11570), (338, 8455), (445, 6422), (494, 5785), (845, 3382), (890, 3211), (1157, 2470), (1235, 2314), (1690, 1691)]