1791002680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:557

約数の個数: 128

約数和(自身を含む): 4313088000

約数和(自身を除く): 2522085320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 79, 94, 124, 155, 158, 188, 235, 248, 310, 316, 376, 389, 395, 470, 620, 632, 778, 790, 940, 1240, 1457, 1556, 1580, 1880, 1945, 2449, 2914, 3112, 3160, 3713, 3890, 4898, 5828, 7285, 7426, 7780, 9796, 11656, 12059, 12245, 14570, 14852, 15560, 18283, 18565, 19592, 24118, 24490, 29140, 29704, 30731, 36566, 37130, 48236, 48980, 58280, 60295, 61462, 73132, 74260, 91415, 96472, 97960, 115103, 120590, 122924, 146264, 148520, 153655, 182830, 230206, 241180, 245848, 307310, 365660, 460412, 482360, 566773, 575515, 614620, 731320, 920824, 952661, 1133546, 1151030, 1229240, 1444357, 1905322, 2267092, 2302060, 2833865, 2888714, 3810644, 4534184, 4604120, 4763305, 5667730, 5777428, 7221785, 7621288, 9526610, 11335460, 11554856, 14443570, 19053220, 22670920, 28887140, 38106440, 44775067, 57774280, 89550134, 179100268, 223875335, 358200536, 447750670, 895501340, 1791002680]

約数ペア:

[(1, 1791002680), (2, 895501340), (4, 447750670), (5, 358200536), (8, 223875335), (10, 179100268), (20, 89550134), (31, 57774280), (40, 44775067), (47, 38106440), (62, 28887140), (79, 22670920), (94, 19053220), (124, 14443570), (155, 11554856), (158, 11335460), (188, 9526610), (235, 7621288), (248, 7221785), (310, 5777428), (316, 5667730), (376, 4763305), (389, 4604120), (395, 4534184), (470, 3810644), (620, 2888714), (632, 2833865), (778, 2302060), (790, 2267092), (940, 1905322), (1240, 1444357), (1457, 1229240), (1556, 1151030), (1580, 1133546), (1880, 952661), (1945, 920824), (2449, 731320), (2914, 614620), (3112, 575515), (3160, 566773), (3713, 482360), (3890, 460412), (4898, 365660), (5828, 307310), (7285, 245848), (7426, 241180), (7780, 230206), (9796, 182830), (11656, 153655), (12059, 148520), (12245, 146264), (14570, 122924), (14852, 120590), (15560, 115103), (18283, 97960), (18565, 96472), (19592, 91415), (24118, 74260), (24490, 73132), (29140, 61462), (29704, 60295), (30731, 58280), (36566, 48980), (37130, 48236)]