18645488

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:753

約数の個数: 40

約数和(自身を含む): 37924656

約数和(自身を除く): 19279168

約数列:

[1, 2, 4, 8, 16, 41, 43, 82, 86, 164, 172, 328, 344, 656, 661, 688, 1322, 1763, 2644, 3526, 5288, 7052, 10576, 14104, 27101, 28208, 28423, 54202, 56846, 108404, 113692, 216808, 227384, 433616, 454768, 1165343, 2330686, 4661372, 9322744, 18645488]

約数ペア:

[(1, 18645488), (2, 9322744), (4, 4661372), (8, 2330686), (16, 1165343), (41, 454768), (43, 433616), (82, 227384), (86, 216808), (164, 113692), (172, 108404), (328, 56846), (344, 54202), (656, 28423), (661, 28208), (688, 27101), (1322, 14104), (1763, 10576), (2644, 7052), (3526, 5288)]