21807536

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1093}}^1$

素因数の和:1173

約数の個数: 40

約数和(自身を含む): 44766480

約数和(自身を除く): 22958944

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 1093, 1247, 2186, 2494, 4372, 4988, 8744, 9976, 17488, 19952, 31697, 46999, 63394, 93998, 126788, 187996, 253576, 375992, 507152, 751984, 1362971, 2725942, 5451884, 10903768, 21807536]

約数ペア:

[(1, 21807536), (2, 10903768), (4, 5451884), (8, 2725942), (16, 1362971), (29, 751984), (43, 507152), (58, 375992), (86, 253576), (116, 187996), (172, 126788), (232, 93998), (344, 63394), (464, 46999), (688, 31697), (1093, 19952), (1247, 17488), (2186, 9976), (2494, 8744), (4372, 4988)]