2021121025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:415

約数の個数: 96

約数和(自身を含む): 3239792640

約数和(自身を除く): 1218671615

約数列:

[1, 5, 7, 11, 25, 35, 47, 55, 77, 89, 175, 235, 251, 275, 329, 385, 445, 517, 623, 979, 1175, 1255, 1645, 1757, 1925, 2225, 2585, 2761, 3115, 3619, 4183, 4895, 6275, 6853, 8225, 8785, 11797, 12925, 13805, 15575, 18095, 19327, 20915, 22339, 24475, 29281, 34265, 43925, 46013, 58985, 69025, 82579, 90475, 96635, 104575, 111695, 129767, 146405, 156373, 171325, 230065, 245729, 294925, 322091, 412895, 483175, 558475, 648835, 732025, 781865, 908369, 1049933, 1150325, 1228645, 1610455, 1720103, 2064475, 3244175, 3909325, 4541845, 5249665, 6143225, 7349531, 8052275, 8600515, 11549263, 22709225, 26248325, 36747655, 43002575, 57746315, 80844841, 183738275, 288731575, 404224205, 2021121025]

約数ペア:

[(1, 2021121025), (5, 404224205), (7, 288731575), (11, 183738275), (25, 80844841), (35, 57746315), (47, 43002575), (55, 36747655), (77, 26248325), (89, 22709225), (175, 11549263), (235, 8600515), (251, 8052275), (275, 7349531), (329, 6143225), (385, 5249665), (445, 4541845), (517, 3909325), (623, 3244175), (979, 2064475), (1175, 1720103), (1255, 1610455), (1645, 1228645), (1757, 1150325), (1925, 1049933), (2225, 908369), (2585, 781865), (2761, 732025), (3115, 648835), (3619, 558475), (4183, 483175), (4895, 412895), (6275, 322091), (6853, 294925), (8225, 245729), (8785, 230065), (11797, 171325), (12925, 156373), (13805, 146405), (15575, 129767), (18095, 111695), (19327, 104575), (20915, 96635), (22339, 90475), (24475, 82579), (29281, 69025), (34265, 58985), (43925, 46013)]