12991706

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:88

約数の個数: 72

約数和(自身を含む): 26966880

約数和(自身を除く): 13975174

約数列:

[1, 2, 7, 13, 14, 17, 19, 26, 34, 38, 91, 119, 133, 169, 182, 221, 238, 247, 266, 289, 323, 338, 442, 494, 578, 646, 1183, 1547, 1729, 2023, 2261, 2366, 2873, 3094, 3211, 3458, 3757, 4046, 4199, 4522, 5491, 5746, 6422, 7514, 8398, 10982, 20111, 22477, 26299, 29393, 38437, 40222, 44954, 48841, 52598, 54587, 58786, 71383, 76874, 97682, 109174, 142766, 341887, 382109, 499681, 683774, 764218, 927979, 999362, 1855958, 6495853, 12991706]

約数ペア:

[(1, 12991706), (2, 6495853), (7, 1855958), (13, 999362), (14, 927979), (17, 764218), (19, 683774), (26, 499681), (34, 382109), (38, 341887), (91, 142766), (119, 109174), (133, 97682), (169, 76874), (182, 71383), (221, 58786), (238, 54587), (247, 52598), (266, 48841), (289, 44954), (323, 40222), (338, 38437), (442, 29393), (494, 26299), (578, 22477), (646, 20111), (1183, 10982), (1547, 8398), (1729, 7514), (2023, 6422), (2261, 5746), (2366, 5491), (2873, 4522), (3094, 4199), (3211, 4046), (3458, 3757)]