21576247

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 29113344

約数和(自身を除く): 7537097

約数列:

[1, 7, 11, 17, 53, 77, 119, 187, 311, 371, 583, 901, 1309, 2177, 3421, 4081, 5287, 6307, 9911, 16483, 23947, 37009, 58157, 69377, 115381, 181313, 280211, 407099, 1269191, 1961477, 3082321, 21576247]

約数ペア:

[(1, 21576247), (7, 3082321), (11, 1961477), (17, 1269191), (53, 407099), (77, 280211), (119, 181313), (187, 115381), (311, 69377), (371, 58157), (583, 37009), (901, 23947), (1309, 16483), (2177, 9911), (3421, 6307), (4081, 5287)]