16561797

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 26112000

約数和(自身を除く): 9550203

約数列:

[1, 3, 7, 21, 67, 79, 149, 201, 237, 447, 469, 553, 1043, 1407, 1659, 3129, 5293, 9983, 11771, 15879, 29949, 35313, 37051, 69881, 82397, 111153, 209643, 247191, 788657, 2365971, 5520599, 16561797]

約数ペア:

[(1, 16561797), (3, 5520599), (7, 2365971), (21, 788657), (67, 247191), (79, 209643), (149, 111153), (201, 82397), (237, 69881), (447, 37051), (469, 35313), (553, 29949), (1043, 15879), (1407, 11771), (1659, 9983), (3129, 5293)]