20869786

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:283

約数の個数: 48

約数和(自身を含む): 39004416

約数和(自身を除く): 18134630

約数列:

[1, 2, 7, 14, 23, 46, 47, 49, 94, 98, 161, 197, 322, 329, 394, 658, 1081, 1127, 1379, 2162, 2254, 2303, 2758, 4531, 4606, 7567, 9062, 9259, 9653, 15134, 18518, 19306, 31717, 52969, 63434, 64813, 105938, 129626, 212957, 222019, 425914, 444038, 453691, 907382, 1490699, 2981398, 10434893, 20869786]

約数ペア:

[(1, 20869786), (2, 10434893), (7, 2981398), (14, 1490699), (23, 907382), (46, 453691), (47, 444038), (49, 425914), (94, 222019), (98, 212957), (161, 129626), (197, 105938), (322, 64813), (329, 63434), (394, 52969), (658, 31717), (1081, 19306), (1127, 18518), (1379, 15134), (2162, 9653), (2254, 9259), (2303, 9062), (2758, 7567), (4531, 4606)]