18917888

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{3359}}^1$

素因数の和:3388

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 22329472

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 512, 704, 1408, 2816, 3359, 5632, 6718, 13436, 26872, 36949, 53744, 73898, 107488, 147796, 214976, 295592, 429952, 591184, 859904, 1182368, 1719808, 2364736, 4729472, 9458944, 18917888]

約数ペア:

[(1, 18917888), (2, 9458944), (4, 4729472), (8, 2364736), (11, 1719808), (16, 1182368), (22, 859904), (32, 591184), (44, 429952), (64, 295592), (88, 214976), (128, 147796), (176, 107488), (256, 73898), (352, 53744), (512, 36949), (704, 26872), (1408, 13436), (2816, 6718), (3359, 5632)]