19156025

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 29569536

約数和(自身を除く): 10413511

約数列:

[1, 5, 7, 17, 25, 35, 47, 85, 119, 137, 175, 235, 329, 425, 595, 685, 799, 959, 1175, 1645, 2329, 2975, 3425, 3995, 4795, 5593, 6439, 8225, 11645, 16303, 19975, 23975, 27965, 32195, 45073, 58225, 81515, 109463, 139825, 160975, 225365, 407575, 547315, 766241, 1126825, 2736575, 3831205, 19156025]

約数ペア:

[(1, 19156025), (5, 3831205), (7, 2736575), (17, 1126825), (25, 766241), (35, 547315), (47, 407575), (85, 225365), (119, 160975), (137, 139825), (175, 109463), (235, 81515), (329, 58225), (425, 45073), (595, 32195), (685, 27965), (799, 23975), (959, 19975), (1175, 16303), (1645, 11645), (2329, 8225), (2975, 6439), (3425, 5593), (3995, 4795)]