68491980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{829}}^1$

素因数の和:870

約数の個数: 144

約数和(自身を含む): 228402720

約数和(自身を除く): 159910740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 243, 255, 270, 306, 324, 340, 405, 459, 486, 510, 540, 612, 765, 810, 829, 918, 972, 1020, 1215, 1377, 1530, 1620, 1658, 1836, 2295, 2430, 2487, 2754, 3060, 3316, 4131, 4145, 4590, 4860, 4974, 5508, 6885, 7461, 8262, 8290, 9180, 9948, 12435, 13770, 14093, 14922, 16524, 16580, 20655, 22383, 24870, 27540, 28186, 29844, 37305, 41310, 42279, 44766, 49740, 56372, 67149, 70465, 74610, 82620, 84558, 89532, 111915, 126837, 134298, 140930, 149220, 169116, 201447, 211395, 223830, 253674, 268596, 281860, 335745, 380511, 402894, 422790, 447660, 507348, 634185, 671490, 761022, 805788, 845580, 1007235, 1141533, 1268370, 1342980, 1522044, 1902555, 2014470, 2283066, 2536740, 3424599, 3805110, 4028940, 4566132, 5707665, 6849198, 7610220, 11415330, 13698396, 17122995, 22830660, 34245990, 68491980]

約数ペア:

[(1, 68491980), (2, 34245990), (3, 22830660), (4, 17122995), (5, 13698396), (6, 11415330), (9, 7610220), (10, 6849198), (12, 5707665), (15, 4566132), (17, 4028940), (18, 3805110), (20, 3424599), (27, 2536740), (30, 2283066), (34, 2014470), (36, 1902555), (45, 1522044), (51, 1342980), (54, 1268370), (60, 1141533), (68, 1007235), (81, 845580), (85, 805788), (90, 761022), (102, 671490), (108, 634185), (135, 507348), (153, 447660), (162, 422790), (170, 402894), (180, 380511), (204, 335745), (243, 281860), (255, 268596), (270, 253674), (306, 223830), (324, 211395), (340, 201447), (405, 169116), (459, 149220), (486, 140930), (510, 134298), (540, 126837), (612, 111915), (765, 89532), (810, 84558), (829, 82620), (918, 74610), (972, 70465), (1020, 67149), (1215, 56372), (1377, 49740), (1530, 44766), (1620, 42279), (1658, 41310), (1836, 37305), (2295, 29844), (2430, 28186), (2487, 27540), (2754, 24870), (3060, 22383), (3316, 20655), (4131, 16580), (4145, 16524), (4590, 14922), (4860, 14093), (4974, 13770), (5508, 12435), (6885, 9948), (7461, 9180), (8262, 8290)]