1721720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:85

約数の個数: 128

約数和(自身を含む): 5322240

約数和(自身を除く): 3600520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 43, 44, 52, 55, 56, 65, 70, 77, 86, 88, 91, 104, 110, 130, 140, 143, 154, 172, 182, 215, 220, 260, 280, 286, 301, 308, 344, 364, 385, 430, 440, 455, 473, 520, 559, 572, 602, 616, 715, 728, 770, 860, 910, 946, 1001, 1118, 1144, 1204, 1430, 1505, 1540, 1720, 1820, 1892, 2002, 2236, 2365, 2408, 2795, 2860, 3010, 3080, 3311, 3640, 3784, 3913, 4004, 4472, 4730, 5005, 5590, 5720, 6020, 6149, 6622, 7826, 8008, 9460, 10010, 11180, 12040, 12298, 13244, 15652, 16555, 18920, 19565, 20020, 22360, 24596, 26488, 30745, 31304, 33110, 39130, 40040, 43043, 49192, 61490, 66220, 78260, 86086, 122980, 132440, 156520, 172172, 215215, 245960, 344344, 430430, 860860, 1721720]

約数ペア:

[(1, 1721720), (2, 860860), (4, 430430), (5, 344344), (7, 245960), (8, 215215), (10, 172172), (11, 156520), (13, 132440), (14, 122980), (20, 86086), (22, 78260), (26, 66220), (28, 61490), (35, 49192), (40, 43043), (43, 40040), (44, 39130), (52, 33110), (55, 31304), (56, 30745), (65, 26488), (70, 24596), (77, 22360), (86, 20020), (88, 19565), (91, 18920), (104, 16555), (110, 15652), (130, 13244), (140, 12298), (143, 12040), (154, 11180), (172, 10010), (182, 9460), (215, 8008), (220, 7826), (260, 6622), (280, 6149), (286, 6020), (301, 5720), (308, 5590), (344, 5005), (364, 4730), (385, 4472), (430, 4004), (440, 3913), (455, 3784), (473, 3640), (520, 3311), (559, 3080), (572, 3010), (602, 2860), (616, 2795), (715, 2408), (728, 2365), (770, 2236), (860, 2002), (910, 1892), (946, 1820), (1001, 1720), (1118, 1540), (1144, 1505), (1204, 1430)]