81740428

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1223}}^1$

素因数の和:1283

約数の個数: 72

約数和(自身を含む): 187536384

約数和(自身を除く): 105795956

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 124, 154, 196, 217, 308, 341, 434, 539, 682, 868, 1078, 1223, 1364, 1519, 2156, 2387, 2446, 3038, 4774, 4892, 6076, 8561, 9548, 13453, 16709, 17122, 26906, 33418, 34244, 37913, 53812, 59927, 66836, 75826, 94171, 119854, 151652, 188342, 239708, 265391, 376684, 417043, 530782, 659197, 834086, 1061564, 1318394, 1668172, 1857737, 2636788, 2919301, 3715474, 5838602, 7430948, 11677204, 20435107, 40870214, 81740428]

約数ペア:

[(1, 81740428), (2, 40870214), (4, 20435107), (7, 11677204), (11, 7430948), (14, 5838602), (22, 3715474), (28, 2919301), (31, 2636788), (44, 1857737), (49, 1668172), (62, 1318394), (77, 1061564), (98, 834086), (124, 659197), (154, 530782), (196, 417043), (217, 376684), (308, 265391), (341, 239708), (434, 188342), (539, 151652), (682, 119854), (868, 94171), (1078, 75826), (1223, 66836), (1364, 59927), (1519, 53812), (2156, 37913), (2387, 34244), (2446, 33418), (3038, 26906), (4774, 17122), (4892, 16709), (6076, 13453), (8561, 9548)]