21196994

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{31}}^1$

素因数の和:100

約数の個数: 72

約数和(自身を含む): 43147008

約数和(自身を除く): 21950014

約数列:

[1, 2, 7, 13, 14, 17, 26, 31, 34, 62, 91, 119, 169, 182, 217, 221, 238, 289, 338, 403, 434, 442, 527, 578, 806, 1054, 1183, 1547, 2023, 2366, 2821, 2873, 3094, 3689, 3757, 4046, 5239, 5642, 5746, 6851, 7378, 7514, 8959, 10478, 13702, 17918, 20111, 26299, 36673, 40222, 47957, 48841, 52598, 62713, 73346, 89063, 95914, 97682, 116467, 125426, 178126, 232934, 341887, 623441, 683774, 815269, 1246882, 1514071, 1630538, 3028142, 10598497, 21196994]

約数ペア:

[(1, 21196994), (2, 10598497), (7, 3028142), (13, 1630538), (14, 1514071), (17, 1246882), (26, 815269), (31, 683774), (34, 623441), (62, 341887), (91, 232934), (119, 178126), (169, 125426), (182, 116467), (217, 97682), (221, 95914), (238, 89063), (289, 73346), (338, 62713), (403, 52598), (434, 48841), (442, 47957), (527, 40222), (578, 36673), (806, 26299), (1054, 20111), (1183, 17918), (1547, 13702), (2023, 10478), (2366, 8959), (2821, 7514), (2873, 7378), (3094, 6851), (3689, 5746), (3757, 5642), (4046, 5239)]