209779780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:314

約数の個数: 144

約数和(自身を含む): 550198656

約数和(自身を除く): 340418876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 41, 46, 49, 70, 82, 92, 98, 115, 140, 161, 164, 196, 205, 227, 230, 245, 287, 322, 410, 454, 460, 490, 574, 644, 805, 820, 908, 943, 980, 1127, 1135, 1148, 1435, 1589, 1610, 1886, 2009, 2254, 2270, 2870, 3178, 3220, 3772, 4018, 4508, 4540, 4715, 5221, 5635, 5740, 6356, 6601, 7945, 8036, 9307, 9430, 10045, 10442, 11123, 11270, 13202, 15890, 18614, 18860, 20090, 20884, 22246, 22540, 26105, 26404, 31780, 33005, 36547, 37228, 40180, 44492, 46207, 46535, 52210, 55615, 65149, 66010, 73094, 92414, 93070, 104420, 111230, 130298, 132020, 146188, 182735, 184828, 186140, 214061, 222460, 231035, 255829, 260596, 325745, 365470, 428122, 456043, 462070, 511658, 651490, 730940, 856244, 912086, 924140, 1023316, 1070305, 1279145, 1302980, 1498427, 1824172, 2140610, 2280215, 2558290, 2996854, 4281220, 4560430, 5116580, 5993708, 7492135, 9120860, 10488989, 14984270, 20977978, 29968540, 41955956, 52444945, 104889890, 209779780]

約数ペア:

[(1, 209779780), (2, 104889890), (4, 52444945), (5, 41955956), (7, 29968540), (10, 20977978), (14, 14984270), (20, 10488989), (23, 9120860), (28, 7492135), (35, 5993708), (41, 5116580), (46, 4560430), (49, 4281220), (70, 2996854), (82, 2558290), (92, 2280215), (98, 2140610), (115, 1824172), (140, 1498427), (161, 1302980), (164, 1279145), (196, 1070305), (205, 1023316), (227, 924140), (230, 912086), (245, 856244), (287, 730940), (322, 651490), (410, 511658), (454, 462070), (460, 456043), (490, 428122), (574, 365470), (644, 325745), (805, 260596), (820, 255829), (908, 231035), (943, 222460), (980, 214061), (1127, 186140), (1135, 184828), (1148, 182735), (1435, 146188), (1589, 132020), (1610, 130298), (1886, 111230), (2009, 104420), (2254, 93070), (2270, 92414), (2870, 73094), (3178, 66010), (3220, 65149), (3772, 55615), (4018, 52210), (4508, 46535), (4540, 46207), (4715, 44492), (5221, 40180), (5635, 37228), (5740, 36547), (6356, 33005), (6601, 31780), (7945, 26404), (8036, 26105), (9307, 22540), (9430, 22246), (10045, 20884), (10442, 20090), (11123, 18860), (11270, 18614), (13202, 15890)]