21721458

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{829}}^1$

素因数の和:1242

約数の個数: 32

約数和(自身を含む): 47568960

約数和(自身を除く): 25847502

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 397, 794, 829, 1191, 1658, 2382, 2487, 4367, 4974, 8734, 9119, 13101, 18238, 26202, 27357, 54714, 329113, 658226, 987339, 1974678, 3620243, 7240486, 10860729, 21721458]

約数ペア:

[(1, 21721458), (2, 10860729), (3, 7240486), (6, 3620243), (11, 1974678), (22, 987339), (33, 658226), (66, 329113), (397, 54714), (794, 27357), (829, 26202), (1191, 18238), (1658, 13101), (2382, 9119), (2487, 8734), (4367, 4974)]