21803397

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2551}}^1$

素因数の和:2609

約数の個数: 32

約数和(自身を含む): 37238784

約数和(自身を除く): 15435387

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2551, 2849, 7653, 8547, 17857, 28061, 53571, 84183, 94387, 196427, 283161, 589281, 660709, 1038257, 1982127, 3114771, 7267799, 21803397]

約数ペア:

[(1, 21803397), (3, 7267799), (7, 3114771), (11, 1982127), (21, 1038257), (33, 660709), (37, 589281), (77, 283161), (111, 196427), (231, 94387), (259, 84183), (407, 53571), (777, 28061), (1221, 17857), (2551, 8547), (2849, 7653)]