21042175105

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{44203}}^1$

素因数の和:44318

約数の個数: 48

約数和(自身を含む): 30840246720

約数和(自身を除く): 9798071615

約数列:

[1, 5, 7, 29, 35, 49, 67, 145, 203, 245, 335, 469, 1015, 1421, 1943, 2345, 3283, 7105, 9715, 13601, 16415, 44203, 68005, 95207, 221015, 309421, 476035, 1281887, 1547105, 2165947, 2961601, 6409435, 8973209, 10829735, 14808005, 20731207, 44866045, 62812463, 85886429, 103656035, 145118449, 314062315, 429432145, 601205003, 725592245, 3006025015, 4208435021, 21042175105]

約数ペア:

[(1, 21042175105), (5, 4208435021), (7, 3006025015), (29, 725592245), (35, 601205003), (49, 429432145), (67, 314062315), (145, 145118449), (203, 103656035), (245, 85886429), (335, 62812463), (469, 44866045), (1015, 20731207), (1421, 14808005), (1943, 10829735), (2345, 8973209), (3283, 6409435), (7105, 2961601), (9715, 2165947), (13601, 1547105), (16415, 1281887), (44203, 476035), (68005, 309421), (95207, 221015)]