20385176

素因数分解:

$2^3\times 7^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:86

約数の個数: 128

約数和(自身を含む): 51840000

約数和(自身を除く): 31454824

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 23, 28, 34, 38, 46, 49, 56, 68, 76, 92, 98, 119, 133, 136, 152, 161, 184, 196, 238, 266, 322, 323, 343, 391, 392, 437, 476, 532, 644, 646, 686, 782, 833, 874, 931, 952, 1064, 1127, 1288, 1292, 1372, 1564, 1666, 1748, 1862, 2254, 2261, 2584, 2737, 2744, 3059, 3128, 3332, 3496, 3724, 4508, 4522, 5474, 5831, 6118, 6517, 6664, 7429, 7448, 7889, 9016, 9044, 10948, 11662, 12236, 13034, 14858, 15778, 15827, 18088, 19159, 21413, 21896, 23324, 24472, 26068, 29716, 31556, 31654, 38318, 42826, 46648, 52003, 52136, 59432, 63112, 63308, 76636, 85652, 104006, 110789, 126616, 134113, 149891, 153272, 171304, 208012, 221578, 268226, 299782, 364021, 416024, 443156, 536452, 599564, 728042, 886312, 1072904, 1199128, 1456084, 2548147, 2912168, 5096294, 10192588, 20385176]

約数ペア:

[(1, 20385176), (2, 10192588), (4, 5096294), (7, 2912168), (8, 2548147), (14, 1456084), (17, 1199128), (19, 1072904), (23, 886312), (28, 728042), (34, 599564), (38, 536452), (46, 443156), (49, 416024), (56, 364021), (68, 299782), (76, 268226), (92, 221578), (98, 208012), (119, 171304), (133, 153272), (136, 149891), (152, 134113), (161, 126616), (184, 110789), (196, 104006), (238, 85652), (266, 76636), (322, 63308), (323, 63112), (343, 59432), (391, 52136), (392, 52003), (437, 46648), (476, 42826), (532, 38318), (644, 31654), (646, 31556), (686, 29716), (782, 26068), (833, 24472), (874, 23324), (931, 21896), (952, 21413), (1064, 19159), (1127, 18088), (1288, 15827), (1292, 15778), (1372, 14858), (1564, 13034), (1666, 12236), (1748, 11662), (1862, 10948), (2254, 9044), (2261, 9016), (2584, 7889), (2737, 7448), (2744, 7429), (3059, 6664), (3128, 6517), (3332, 6118), (3496, 5831), (3724, 5474), (4508, 4522)]