21232519

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 29122560

約数和(自身を除く): 7890041

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 631, 1463, 1771, 3059, 4417, 4807, 6941, 11989, 14513, 33649, 48587, 83923, 101591, 131879, 159643, 275747, 923153, 1117501, 1930229, 3033217, 21232519]

約数ペア:

[(1, 21232519), (7, 3033217), (11, 1930229), (19, 1117501), (23, 923153), (77, 275747), (133, 159643), (161, 131879), (209, 101591), (253, 83923), (437, 48587), (631, 33649), (1463, 14513), (1771, 11989), (3059, 6941), (4417, 4807)]