991856656

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{285673}}^1$

素因数の和:285719

約数の個数: 40

約数和(自身を含む): 2267108864

約数和(自身を除く): 1275252208

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 285673, 571346, 1142692, 1999711, 2285384, 3999422, 4570768, 7998844, 8855863, 15997688, 17711726, 31995376, 35423452, 61991041, 70846904, 123982082, 141693808, 247964164, 495928328, 991856656]

約数ペア:

[(1, 991856656), (2, 495928328), (4, 247964164), (7, 141693808), (8, 123982082), (14, 70846904), (16, 61991041), (28, 35423452), (31, 31995376), (56, 17711726), (62, 15997688), (112, 8855863), (124, 7998844), (217, 4570768), (248, 3999422), (434, 2285384), (496, 1999711), (868, 1142692), (1736, 571346), (3472, 285673)]