1904993825

素因数分解:

$5^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:387

約数の個数: 72

約数和(自身を含む): 2822464440

約数和(自身を除く): 917470615

約数列:

[1, 5, 7, 25, 35, 49, 89, 101, 173, 175, 245, 445, 505, 623, 707, 865, 1211, 1225, 2225, 2525, 3115, 3535, 4325, 4361, 4949, 6055, 8477, 8989, 15397, 15575, 17473, 17675, 21805, 24745, 30275, 42385, 44945, 62923, 76985, 87365, 107779, 109025, 122311, 123725, 211925, 224725, 314615, 384925, 436825, 440461, 538895, 611555, 754453, 856177, 1555097, 1573075, 2202305, 2694475, 3057775, 3772265, 4280885, 7775485, 10885679, 11011525, 18861325, 21404425, 38877425, 54428395, 76199753, 272141975, 380998765, 1904993825]

約数ペア:

[(1, 1904993825), (5, 380998765), (7, 272141975), (25, 76199753), (35, 54428395), (49, 38877425), (89, 21404425), (101, 18861325), (173, 11011525), (175, 10885679), (245, 7775485), (445, 4280885), (505, 3772265), (623, 3057775), (707, 2694475), (865, 2202305), (1211, 1573075), (1225, 1555097), (2225, 856177), (2525, 754453), (3115, 611555), (3535, 538895), (4325, 440461), (4361, 436825), (4949, 384925), (6055, 314615), (8477, 224725), (8989, 211925), (15397, 123725), (15575, 122311), (17473, 109025), (17675, 107779), (21805, 87365), (24745, 76985), (30275, 62923), (42385, 44945)]