661761828

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2557}}^1$

素因数の和:2666

約数の個数: 144

約数和(自身を含む): 2085690880

約数和(自身を除く): 1423929052

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 79, 84, 91, 117, 126, 156, 158, 182, 234, 237, 252, 273, 316, 364, 468, 474, 546, 553, 711, 819, 948, 1027, 1092, 1106, 1422, 1638, 1659, 2054, 2212, 2557, 2844, 3081, 3276, 3318, 4108, 4977, 5114, 6162, 6636, 7189, 7671, 9243, 9954, 10228, 12324, 14378, 15342, 17899, 18486, 19908, 21567, 23013, 28756, 30684, 33241, 35798, 36972, 43134, 46026, 53697, 64701, 66482, 71596, 86268, 92052, 99723, 107394, 129402, 132964, 161091, 199446, 202003, 214788, 232687, 258804, 299169, 322182, 398892, 404006, 465374, 598338, 606009, 644364, 698061, 808012, 930748, 1196676, 1212018, 1396122, 1414021, 1818027, 2094183, 2424036, 2626039, 2792244, 2828042, 3636054, 4188366, 4242063, 5252078, 5656084, 7272108, 7878117, 8376732, 8484126, 10504156, 12726189, 15756234, 16968252, 18382273, 23634351, 25452378, 31512468, 36764546, 47268702, 50904756, 55146819, 73529092, 94537404, 110293638, 165440457, 220587276, 330880914, 661761828]

約数ペア:

[(1, 661761828), (2, 330880914), (3, 220587276), (4, 165440457), (6, 110293638), (7, 94537404), (9, 73529092), (12, 55146819), (13, 50904756), (14, 47268702), (18, 36764546), (21, 31512468), (26, 25452378), (28, 23634351), (36, 18382273), (39, 16968252), (42, 15756234), (52, 12726189), (63, 10504156), (78, 8484126), (79, 8376732), (84, 7878117), (91, 7272108), (117, 5656084), (126, 5252078), (156, 4242063), (158, 4188366), (182, 3636054), (234, 2828042), (237, 2792244), (252, 2626039), (273, 2424036), (316, 2094183), (364, 1818027), (468, 1414021), (474, 1396122), (546, 1212018), (553, 1196676), (711, 930748), (819, 808012), (948, 698061), (1027, 644364), (1092, 606009), (1106, 598338), (1422, 465374), (1638, 404006), (1659, 398892), (2054, 322182), (2212, 299169), (2557, 258804), (2844, 232687), (3081, 214788), (3276, 202003), (3318, 199446), (4108, 161091), (4977, 132964), (5114, 129402), (6162, 107394), (6636, 99723), (7189, 92052), (7671, 86268), (9243, 71596), (9954, 66482), (10228, 64701), (12324, 53697), (14378, 46026), (15342, 43134), (17899, 36972), (18486, 35798), (19908, 33241), (21567, 30684), (23013, 28756)]