81991312

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8387}}^1$

素因数の和:8455

約数の個数: 40

約数和(自身を含む): 174738816

約数和(自身を除く): 92747504

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2444, 4888, 8387, 9776, 16774, 33548, 67096, 109031, 134192, 218062, 394189, 436124, 788378, 872248, 1576756, 1744496, 3153512, 5124457, 6307024, 10248914, 20497828, 40995656, 81991312]

約数ペア:

[(1, 81991312), (2, 40995656), (4, 20497828), (8, 10248914), (13, 6307024), (16, 5124457), (26, 3153512), (47, 1744496), (52, 1576756), (94, 872248), (104, 788378), (188, 436124), (208, 394189), (376, 218062), (611, 134192), (752, 109031), (1222, 67096), (2444, 33548), (4888, 16774), (8387, 9776)]