21508686

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 50054400

約数和(自身を除く): 28545714

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 59, 86, 118, 129, 157, 177, 258, 314, 354, 387, 471, 531, 774, 942, 1062, 1161, 1413, 1593, 2322, 2537, 2826, 3186, 4239, 5074, 6751, 7611, 8478, 9263, 13502, 15222, 18526, 20253, 22833, 27789, 40506, 45666, 55578, 60759, 68499, 83367, 121518, 136998, 166734, 182277, 250101, 364554, 398309, 500202, 796618, 1194927, 2389854, 3584781, 7169562, 10754343, 21508686]

約数ペア:

[(1, 21508686), (2, 10754343), (3, 7169562), (6, 3584781), (9, 2389854), (18, 1194927), (27, 796618), (43, 500202), (54, 398309), (59, 364554), (86, 250101), (118, 182277), (129, 166734), (157, 136998), (177, 121518), (258, 83367), (314, 68499), (354, 60759), (387, 55578), (471, 45666), (531, 40506), (774, 27789), (942, 22833), (1062, 20253), (1161, 18526), (1413, 15222), (1593, 13502), (2322, 9263), (2537, 8478), (2826, 7611), (3186, 6751), (4239, 5074)]