21729575

素因数分解:

$5^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{547}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 30986112

約数和(自身を除く): 9256537

約数列:

[1, 5, 7, 25, 35, 175, 227, 547, 1135, 1589, 2735, 3829, 5675, 7945, 13675, 19145, 39725, 95725, 124169, 620845, 869183, 3104225, 4345915, 21729575]

約数ペア:

[(1, 21729575), (5, 4345915), (7, 3104225), (25, 869183), (35, 620845), (175, 124169), (227, 95725), (547, 39725), (1135, 19145), (1589, 13675), (2735, 7945), (3829, 5675)]