21205232

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:357

約数の個数: 40

約数和(自身を含む): 42294912

約数和(自身を除く): 21089680

約数列:

[1, 2, 4, 8, 16, 67, 131, 134, 151, 262, 268, 302, 524, 536, 604, 1048, 1072, 1208, 2096, 2416, 8777, 10117, 17554, 19781, 20234, 35108, 39562, 40468, 70216, 79124, 80936, 140432, 158248, 161872, 316496, 1325327, 2650654, 5301308, 10602616, 21205232]

約数ペア:

[(1, 21205232), (2, 10602616), (4, 5301308), (8, 2650654), (16, 1325327), (67, 316496), (131, 161872), (134, 158248), (151, 140432), (262, 80936), (268, 79124), (302, 70216), (524, 40468), (536, 39562), (604, 35108), (1048, 20234), (1072, 19781), (1208, 17554), (2096, 10117), (2416, 8777)]