20419791

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 33005568

約数和(自身を除く): 12585777

約数列:

[1, 3, 7, 21, 23, 67, 69, 161, 201, 469, 483, 631, 1407, 1541, 1893, 4417, 4623, 10787, 13251, 14513, 32361, 42277, 43539, 101591, 126831, 295939, 304773, 887817, 972371, 2917113, 6806597, 20419791]

約数ペア:

[(1, 20419791), (3, 6806597), (7, 2917113), (21, 972371), (23, 887817), (67, 304773), (69, 295939), (161, 126831), (201, 101591), (469, 43539), (483, 42277), (631, 32361), (1407, 14513), (1541, 13251), (1893, 10787), (4417, 4623)]