12721212

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 120

約数和(自身を含む): 39029760

約数和(自身を除く): 26308548

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 71, 79, 81, 84, 108, 126, 142, 158, 162, 189, 213, 237, 252, 284, 316, 324, 378, 426, 474, 497, 553, 567, 639, 711, 756, 852, 948, 994, 1106, 1134, 1278, 1422, 1491, 1659, 1917, 1988, 2133, 2212, 2268, 2556, 2844, 2982, 3318, 3834, 4266, 4473, 4977, 5609, 5751, 5964, 6399, 6636, 7668, 8532, 8946, 9954, 11218, 11502, 12798, 13419, 14931, 16827, 17892, 19908, 22436, 23004, 25596, 26838, 29862, 33654, 39263, 40257, 44793, 50481, 53676, 59724, 67308, 78526, 80514, 89586, 100962, 117789, 151443, 157052, 161028, 179172, 201924, 235578, 302886, 353367, 454329, 471156, 605772, 706734, 908658, 1060101, 1413468, 1817316, 2120202, 3180303, 4240404, 6360606, 12721212]

約数ペア:

[(1, 12721212), (2, 6360606), (3, 4240404), (4, 3180303), (6, 2120202), (7, 1817316), (9, 1413468), (12, 1060101), (14, 908658), (18, 706734), (21, 605772), (27, 471156), (28, 454329), (36, 353367), (42, 302886), (54, 235578), (63, 201924), (71, 179172), (79, 161028), (81, 157052), (84, 151443), (108, 117789), (126, 100962), (142, 89586), (158, 80514), (162, 78526), (189, 67308), (213, 59724), (237, 53676), (252, 50481), (284, 44793), (316, 40257), (324, 39263), (378, 33654), (426, 29862), (474, 26838), (497, 25596), (553, 23004), (567, 22436), (639, 19908), (711, 17892), (756, 16827), (852, 14931), (948, 13419), (994, 12798), (1106, 11502), (1134, 11218), (1278, 9954), (1422, 8946), (1491, 8532), (1659, 7668), (1917, 6636), (1988, 6399), (2133, 5964), (2212, 5751), (2268, 5609), (2556, 4977), (2844, 4473), (2982, 4266), (3318, 3834)]