278380641

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{587}}^1\times {\mathrm{2053}}^1$

素因数の和:2661

約数の個数: 32

約数和(自身を含む): 463776768

約数和(自身を除く): 185396127

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 587, 1761, 2053, 4109, 6159, 6457, 12327, 14371, 19371, 22583, 43113, 45199, 67749, 135597, 158081, 474243, 1205111, 3615333, 8435777, 13256221, 25307331, 39768663, 92793547, 278380641]

約数ペア:

[(1, 278380641), (3, 92793547), (7, 39768663), (11, 25307331), (21, 13256221), (33, 8435777), (77, 3615333), (231, 1205111), (587, 474243), (1761, 158081), (2053, 135597), (4109, 67749), (6159, 45199), (6457, 43113), (12327, 22583), (14371, 19371)]