21097657

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 5755463

約数列:

[1, 7, 19, 41, 53, 73, 133, 287, 371, 511, 779, 1007, 1387, 2173, 2993, 3869, 5453, 7049, 9709, 15211, 20951, 27083, 41287, 56867, 73511, 158629, 289009, 398069, 514577, 1110403, 3013951, 21097657]

約数ペア:

[(1, 21097657), (7, 3013951), (19, 1110403), (41, 514577), (53, 398069), (73, 289009), (133, 158629), (287, 73511), (371, 56867), (511, 41287), (779, 27083), (1007, 20951), (1387, 15211), (2173, 9709), (2993, 7049), (3869, 5453)]