12561913

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 16443392

約数和(自身を除く): 3881479

約数列:

[1, 7, 13, 31, 61, 73, 91, 217, 403, 427, 511, 793, 949, 1891, 2263, 2821, 4453, 5551, 6643, 13237, 15841, 24583, 29419, 31171, 57889, 138043, 172081, 205933, 405223, 966301, 1794559, 12561913]

約数ペア:

[(1, 12561913), (7, 1794559), (13, 966301), (31, 405223), (61, 205933), (73, 172081), (91, 138043), (217, 57889), (403, 31171), (427, 29419), (511, 24583), (793, 15841), (949, 13237), (1891, 6643), (2263, 5551), (2821, 4453)]