17978816

素因数分解:

$2^6\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 56

約数和(自身を含む): 37551360

約数和(自身を除く): 19572544

約数列:

[1, 2, 4, 8, 16, 32, 43, 47, 64, 86, 94, 139, 172, 188, 278, 344, 376, 556, 688, 752, 1112, 1376, 1504, 2021, 2224, 2752, 3008, 4042, 4448, 5977, 6533, 8084, 8896, 11954, 13066, 16168, 23908, 26132, 32336, 47816, 52264, 64672, 95632, 104528, 129344, 191264, 209056, 280919, 382528, 418112, 561838, 1123676, 2247352, 4494704, 8989408, 17978816]

約数ペア:

[(1, 17978816), (2, 8989408), (4, 4494704), (8, 2247352), (16, 1123676), (32, 561838), (43, 418112), (47, 382528), (64, 280919), (86, 209056), (94, 191264), (139, 129344), (172, 104528), (188, 95632), (278, 64672), (344, 52264), (376, 47816), (556, 32336), (688, 26132), (752, 23908), (1112, 16168), (1376, 13066), (1504, 11954), (2021, 8896), (2224, 8084), (2752, 6533), (3008, 5977), (4042, 4448)]