212940980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:346

約数の個数: 144

約数和(自身を含む): 573525120

約数和(自身を除く): 360584140

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 28, 34, 35, 38, 68, 70, 76, 85, 95, 119, 133, 140, 170, 190, 238, 266, 277, 289, 323, 340, 380, 476, 532, 554, 578, 595, 646, 665, 1108, 1156, 1190, 1292, 1330, 1385, 1445, 1615, 1939, 2023, 2261, 2380, 2660, 2770, 2890, 3230, 3878, 4046, 4522, 4709, 5263, 5491, 5540, 5780, 6460, 7756, 8092, 9044, 9418, 9695, 10115, 10526, 10982, 11305, 18836, 19390, 20230, 21052, 21964, 22610, 23545, 26315, 27455, 32963, 36841, 38437, 38780, 40460, 45220, 47090, 52630, 54910, 65926, 73682, 76874, 80053, 89471, 94180, 105260, 109820, 131852, 147364, 153748, 160106, 164815, 178942, 184205, 192185, 320212, 329630, 357884, 368410, 384370, 400265, 447355, 560371, 626297, 659260, 736820, 768740, 800530, 894710, 1120742, 1252594, 1521007, 1601060, 1789420, 2241484, 2505188, 2801855, 3042014, 3131485, 5603710, 6084028, 6262970, 7605035, 10647049, 11207420, 12525940, 15210070, 21294098, 30420140, 42588196, 53235245, 106470490, 212940980]

約数ペア:

[(1, 212940980), (2, 106470490), (4, 53235245), (5, 42588196), (7, 30420140), (10, 21294098), (14, 15210070), (17, 12525940), (19, 11207420), (20, 10647049), (28, 7605035), (34, 6262970), (35, 6084028), (38, 5603710), (68, 3131485), (70, 3042014), (76, 2801855), (85, 2505188), (95, 2241484), (119, 1789420), (133, 1601060), (140, 1521007), (170, 1252594), (190, 1120742), (238, 894710), (266, 800530), (277, 768740), (289, 736820), (323, 659260), (340, 626297), (380, 560371), (476, 447355), (532, 400265), (554, 384370), (578, 368410), (595, 357884), (646, 329630), (665, 320212), (1108, 192185), (1156, 184205), (1190, 178942), (1292, 164815), (1330, 160106), (1385, 153748), (1445, 147364), (1615, 131852), (1939, 109820), (2023, 105260), (2261, 94180), (2380, 89471), (2660, 80053), (2770, 76874), (2890, 73682), (3230, 65926), (3878, 54910), (4046, 52630), (4522, 47090), (4709, 45220), (5263, 40460), (5491, 38780), (5540, 38437), (5780, 36841), (6460, 32963), (7756, 27455), (8092, 26315), (9044, 23545), (9418, 22610), (9695, 21964), (10115, 21052), (10526, 20230), (10982, 19390), (11305, 18836)]