21407685

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{353}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 37110528

約数和(自身を除く): 15702843

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 311, 353, 933, 1059, 1555, 1765, 4043, 4589, 4665, 5295, 12129, 13767, 20215, 22945, 60645, 68835, 109783, 329349, 548915, 1427179, 1646745, 4281537, 7135895, 21407685]

約数ペア:

[(1, 21407685), (3, 7135895), (5, 4281537), (13, 1646745), (15, 1427179), (39, 548915), (65, 329349), (195, 109783), (311, 68835), (353, 60645), (933, 22945), (1059, 20215), (1555, 13767), (1765, 12129), (4043, 5295), (4589, 4665)]