21661710

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:186

約数の個数: 128

約数和(自身を含む): 64281600

約数和(自身を除く): 42619890

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 61, 70, 89, 95, 105, 114, 122, 133, 178, 183, 190, 210, 266, 267, 285, 305, 366, 399, 427, 445, 534, 570, 610, 623, 665, 798, 854, 890, 915, 1159, 1246, 1281, 1330, 1335, 1691, 1830, 1869, 1995, 2135, 2318, 2562, 2670, 3115, 3382, 3477, 3738, 3990, 4270, 5073, 5429, 5795, 6230, 6405, 6954, 8113, 8455, 9345, 10146, 10858, 11590, 11837, 12810, 16226, 16287, 16910, 17385, 18690, 23674, 24339, 25365, 27145, 32574, 34770, 35511, 38003, 40565, 48678, 50730, 54290, 59185, 71022, 76006, 81130, 81435, 103151, 114009, 118370, 121695, 162870, 177555, 190015, 206302, 228018, 243390, 309453, 355110, 380030, 515755, 570045, 618906, 722057, 1031510, 1140090, 1444114, 1547265, 2166171, 3094530, 3610285, 4332342, 7220570, 10830855, 21661710]

約数ペア:

[(1, 21661710), (2, 10830855), (3, 7220570), (5, 4332342), (6, 3610285), (7, 3094530), (10, 2166171), (14, 1547265), (15, 1444114), (19, 1140090), (21, 1031510), (30, 722057), (35, 618906), (38, 570045), (42, 515755), (57, 380030), (61, 355110), (70, 309453), (89, 243390), (95, 228018), (105, 206302), (114, 190015), (122, 177555), (133, 162870), (178, 121695), (183, 118370), (190, 114009), (210, 103151), (266, 81435), (267, 81130), (285, 76006), (305, 71022), (366, 59185), (399, 54290), (427, 50730), (445, 48678), (534, 40565), (570, 38003), (610, 35511), (623, 34770), (665, 32574), (798, 27145), (854, 25365), (890, 24339), (915, 23674), (1159, 18690), (1246, 17385), (1281, 16910), (1330, 16287), (1335, 16226), (1691, 12810), (1830, 11837), (1869, 11590), (1995, 10858), (2135, 10146), (2318, 9345), (2562, 8455), (2670, 8113), (3115, 6954), (3382, 6405), (3477, 6230), (3738, 5795), (3990, 5429), (4270, 5073)]