20966880

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2$

素因数の和:78

約数の個数: 216

約数和(自身を含む): 76617576

約数和(自身を除く): 55650696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 19, 20, 22, 24, 30, 32, 33, 38, 40, 44, 48, 55, 57, 60, 66, 76, 80, 88, 95, 96, 110, 114, 120, 121, 132, 152, 160, 165, 176, 190, 209, 220, 228, 240, 242, 264, 285, 304, 330, 352, 361, 363, 380, 418, 440, 456, 480, 484, 528, 570, 605, 608, 627, 660, 722, 726, 760, 836, 880, 912, 968, 1045, 1056, 1083, 1140, 1210, 1254, 1320, 1444, 1452, 1520, 1672, 1760, 1805, 1815, 1824, 1936, 2090, 2166, 2280, 2299, 2420, 2508, 2640, 2888, 2904, 3040, 3135, 3344, 3610, 3630, 3872, 3971, 4180, 4332, 4560, 4598, 4840, 5016, 5280, 5415, 5776, 5808, 6270, 6688, 6897, 7220, 7260, 7942, 8360, 8664, 9120, 9196, 9680, 10032, 10830, 11495, 11552, 11616, 11913, 12540, 13794, 14440, 14520, 15884, 16720, 17328, 18392, 19360, 19855, 20064, 21660, 22990, 23826, 25080, 27588, 28880, 29040, 31768, 33440, 34485, 34656, 36784, 39710, 43320, 43681, 45980, 47652, 50160, 55176, 57760, 58080, 59565, 63536, 68970, 73568, 79420, 86640, 87362, 91960, 95304, 100320, 110352, 119130, 127072, 131043, 137940, 158840, 173280, 174724, 183920, 190608, 218405, 220704, 238260, 262086, 275880, 317680, 349448, 367840, 381216, 436810, 476520, 524172, 551760, 635360, 655215, 698896, 873620, 953040, 1048344, 1103520, 1310430, 1397792, 1747240, 1906080, 2096688, 2620860, 3494480, 4193376, 5241720, 6988960, 10483440, 20966880]

約数ペア:

[(1, 20966880), (2, 10483440), (3, 6988960), (4, 5241720), (5, 4193376), (6, 3494480), (8, 2620860), (10, 2096688), (11, 1906080), (12, 1747240), (15, 1397792), (16, 1310430), (19, 1103520), (20, 1048344), (22, 953040), (24, 873620), (30, 698896), (32, 655215), (33, 635360), (38, 551760), (40, 524172), (44, 476520), (48, 436810), (55, 381216), (57, 367840), (60, 349448), (66, 317680), (76, 275880), (80, 262086), (88, 238260), (95, 220704), (96, 218405), (110, 190608), (114, 183920), (120, 174724), (121, 173280), (132, 158840), (152, 137940), (160, 131043), (165, 127072), (176, 119130), (190, 110352), (209, 100320), (220, 95304), (228, 91960), (240, 87362), (242, 86640), (264, 79420), (285, 73568), (304, 68970), (330, 63536), (352, 59565), (361, 58080), (363, 57760), (380, 55176), (418, 50160), (440, 47652), (456, 45980), (480, 43681), (484, 43320), (528, 39710), (570, 36784), (605, 34656), (608, 34485), (627, 33440), (660, 31768), (722, 29040), (726, 28880), (760, 27588), (836, 25080), (880, 23826), (912, 22990), (968, 21660), (1045, 20064), (1056, 19855), (1083, 19360), (1140, 18392), (1210, 17328), (1254, 16720), (1320, 15884), (1444, 14520), (1452, 14440), (1520, 13794), (1672, 12540), (1760, 11913), (1805, 11616), (1815, 11552), (1824, 11495), (1936, 10830), (2090, 10032), (2166, 9680), (2280, 9196), (2299, 9120), (2420, 8664), (2508, 8360), (2640, 7942), (2888, 7260), (2904, 7220), (3040, 6897), (3135, 6688), (3344, 6270), (3610, 5808), (3630, 5776), (3872, 5415), (3971, 5280), (4180, 5016), (4332, 4840), (4560, 4598)]