20143980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:288

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 47079540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 29, 30, 34, 36, 45, 51, 58, 60, 68, 85, 87, 90, 102, 116, 145, 153, 170, 174, 180, 204, 227, 255, 261, 290, 306, 340, 348, 435, 454, 493, 510, 522, 580, 612, 681, 765, 870, 908, 986, 1020, 1044, 1135, 1305, 1362, 1479, 1530, 1740, 1972, 2043, 2270, 2465, 2610, 2724, 2958, 3060, 3405, 3859, 4086, 4437, 4540, 4930, 5220, 5916, 6583, 6810, 7395, 7718, 8172, 8874, 9860, 10215, 11577, 13166, 13620, 14790, 15436, 17748, 19295, 19749, 20430, 22185, 23154, 26332, 29580, 32915, 34731, 38590, 39498, 40860, 44370, 46308, 57885, 59247, 65830, 69462, 77180, 78996, 88740, 98745, 111911, 115770, 118494, 131660, 138924, 173655, 197490, 223822, 231540, 236988, 296235, 335733, 347310, 394980, 447644, 559555, 592470, 671466, 694620, 1007199, 1119110, 1184940, 1342932, 1678665, 2014398, 2238220, 3357330, 4028796, 5035995, 6714660, 10071990, 20143980]

約数ペア:

[(1, 20143980), (2, 10071990), (3, 6714660), (4, 5035995), (5, 4028796), (6, 3357330), (9, 2238220), (10, 2014398), (12, 1678665), (15, 1342932), (17, 1184940), (18, 1119110), (20, 1007199), (29, 694620), (30, 671466), (34, 592470), (36, 559555), (45, 447644), (51, 394980), (58, 347310), (60, 335733), (68, 296235), (85, 236988), (87, 231540), (90, 223822), (102, 197490), (116, 173655), (145, 138924), (153, 131660), (170, 118494), (174, 115770), (180, 111911), (204, 98745), (227, 88740), (255, 78996), (261, 77180), (290, 69462), (306, 65830), (340, 59247), (348, 57885), (435, 46308), (454, 44370), (493, 40860), (510, 39498), (522, 38590), (580, 34731), (612, 32915), (681, 29580), (765, 26332), (870, 23154), (908, 22185), (986, 20430), (1020, 19749), (1044, 19295), (1135, 17748), (1305, 15436), (1362, 14790), (1479, 13620), (1530, 13166), (1740, 11577), (1972, 10215), (2043, 9860), (2270, 8874), (2465, 8172), (2610, 7718), (2724, 7395), (2958, 6810), (3060, 6583), (3405, 5916), (3859, 5220), (4086, 4930), (4437, 4540)]