71291668

素因数分解:

$2^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 151683840

約数和(自身を除く): 80392172

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 71, 94, 98, 109, 142, 188, 196, 218, 284, 329, 436, 497, 658, 763, 994, 1316, 1526, 1988, 2303, 3052, 3337, 3479, 4606, 5123, 5341, 6674, 6958, 7739, 9212, 10246, 10682, 13348, 13916, 15478, 20492, 21364, 23359, 30956, 35861, 46718, 54173, 71722, 93436, 108346, 143444, 163513, 216692, 251027, 327026, 363733, 379211, 502054, 654052, 727466, 758422, 1004108, 1454932, 1516844, 2546131, 5092262, 10184524, 17822917, 35645834, 71291668]

約数ペア:

[(1, 71291668), (2, 35645834), (4, 17822917), (7, 10184524), (14, 5092262), (28, 2546131), (47, 1516844), (49, 1454932), (71, 1004108), (94, 758422), (98, 727466), (109, 654052), (142, 502054), (188, 379211), (196, 363733), (218, 327026), (284, 251027), (329, 216692), (436, 163513), (497, 143444), (658, 108346), (763, 93436), (994, 71722), (1316, 54173), (1526, 46718), (1988, 35861), (2303, 30956), (3052, 23359), (3337, 21364), (3479, 20492), (4606, 15478), (5123, 13916), (5341, 13348), (6674, 10682), (6958, 10246), (7739, 9212)]