1809687775

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:345

約数の個数: 96

約数和(自身を含む): 2830929920

約数和(自身を除く): 1021242145

約数列:

[1, 5, 7, 19, 25, 31, 35, 95, 97, 133, 155, 175, 181, 217, 475, 485, 589, 665, 679, 775, 905, 1085, 1267, 1843, 2425, 2945, 3007, 3325, 3395, 3439, 4123, 4525, 5425, 5611, 6335, 9215, 12901, 14725, 15035, 16975, 17195, 17557, 20615, 21049, 24073, 28055, 31675, 39277, 46075, 57133, 64505, 75175, 85975, 87785, 103075, 105245, 106609, 120365, 122899, 140275, 196385, 285665, 322525, 333583, 399931, 438925, 526225, 533045, 544267, 601825, 614495, 746263, 981925, 1428325, 1667915, 1999655, 2335081, 2665225, 2721335, 3072475, 3731315, 3809869, 8339575, 9998275, 10341073, 11675405, 13606675, 18656575, 19049345, 51705365, 58377025, 72387511, 95246725, 258526825, 361937555, 1809687775]

約数ペア:

[(1, 1809687775), (5, 361937555), (7, 258526825), (19, 95246725), (25, 72387511), (31, 58377025), (35, 51705365), (95, 19049345), (97, 18656575), (133, 13606675), (155, 11675405), (175, 10341073), (181, 9998275), (217, 8339575), (475, 3809869), (485, 3731315), (589, 3072475), (665, 2721335), (679, 2665225), (775, 2335081), (905, 1999655), (1085, 1667915), (1267, 1428325), (1843, 981925), (2425, 746263), (2945, 614495), (3007, 601825), (3325, 544267), (3395, 533045), (3439, 526225), (4123, 438925), (4525, 399931), (5425, 333583), (5611, 322525), (6335, 285665), (9215, 196385), (12901, 140275), (14725, 122899), (15035, 120365), (16975, 106609), (17195, 105245), (17557, 103075), (20615, 87785), (21049, 85975), (24073, 75175), (28055, 64505), (31675, 57133), (39277, 46075)]