21070483

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1091}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 4089197

約数列:

[1, 7, 31, 89, 217, 623, 1091, 2759, 7637, 19313, 33821, 97099, 236747, 679693, 3010069, 21070483]

約数ペア:

[(1, 21070483), (7, 3010069), (31, 679693), (89, 236747), (217, 97099), (623, 33821), (1091, 19313), (2759, 7637)]