21031937108

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{443}}^1$

素因数の和:686

約数の個数: 144

約数和(自身を含む): 46593146880

約数和(自身を除く): 25561209772

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 79, 91, 127, 158, 169, 182, 254, 316, 338, 364, 443, 508, 553, 676, 886, 889, 1027, 1106, 1183, 1651, 1772, 1778, 2054, 2212, 2366, 3101, 3302, 3556, 4108, 4732, 5759, 6202, 6604, 7189, 10033, 11518, 11557, 12404, 13351, 14378, 20066, 21463, 23036, 23114, 26702, 28756, 34997, 40132, 40313, 42926, 46228, 53404, 56261, 69994, 70231, 74867, 80626, 85852, 93457, 112522, 130429, 139988, 140462, 149734, 150241, 161252, 186914, 225044, 244979, 260858, 280924, 299468, 300482, 373828, 393827, 454961, 489958, 521716, 524069, 600964, 731393, 787654, 909922, 913003, 979916, 1048138, 1462786, 1575308, 1695577, 1819844, 1826006, 2096276, 2925572, 3184727, 3391154, 3652012, 4444619, 5119751, 5914493, 6369454, 6782308, 8889238, 9508109, 10239502, 11828986, 11869039, 12738908, 17778476, 19016218, 20479004, 23657972, 23738078, 31112333, 38032436, 41401451, 47476156, 57780047, 62224666, 66556763, 82802902, 115560094, 124449332, 133113526, 165605804, 231120188, 266227052, 404460329, 751140611, 808920658, 1502281222, 1617841316, 3004562444, 5257984277, 10515968554, 21031937108]

約数ペア:

[(1, 21031937108), (2, 10515968554), (4, 5257984277), (7, 3004562444), (13, 1617841316), (14, 1502281222), (26, 808920658), (28, 751140611), (52, 404460329), (79, 266227052), (91, 231120188), (127, 165605804), (158, 133113526), (169, 124449332), (182, 115560094), (254, 82802902), (316, 66556763), (338, 62224666), (364, 57780047), (443, 47476156), (508, 41401451), (553, 38032436), (676, 31112333), (886, 23738078), (889, 23657972), (1027, 20479004), (1106, 19016218), (1183, 17778476), (1651, 12738908), (1772, 11869039), (1778, 11828986), (2054, 10239502), (2212, 9508109), (2366, 8889238), (3101, 6782308), (3302, 6369454), (3556, 5914493), (4108, 5119751), (4732, 4444619), (5759, 3652012), (6202, 3391154), (6604, 3184727), (7189, 2925572), (10033, 2096276), (11518, 1826006), (11557, 1819844), (12404, 1695577), (13351, 1575308), (14378, 1462786), (20066, 1048138), (21463, 979916), (23036, 913003), (23114, 909922), (26702, 787654), (28756, 731393), (34997, 600964), (40132, 524069), (40313, 521716), (42926, 489958), (46228, 454961), (53404, 393827), (56261, 373828), (69994, 300482), (70231, 299468), (74867, 280924), (80626, 260858), (85852, 244979), (93457, 225044), (112522, 186914), (130429, 161252), (139988, 150241), (140462, 149734)]