21521843

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{59}}^1$

素因数の和:179

約数の個数: 24

約数和(自身を含む): 26465280

約数和(自身を除く): 4943437

約数列:

[1, 7, 31, 41, 59, 217, 287, 413, 1271, 1681, 1829, 2419, 8897, 11767, 12803, 16933, 52111, 74989, 99179, 364777, 524923, 694253, 3074549, 21521843]

約数ペア:

[(1, 21521843), (7, 3074549), (31, 694253), (41, 524923), (59, 364777), (217, 99179), (287, 74989), (413, 52111), (1271, 16933), (1681, 12803), (1829, 11767), (2419, 8897)]