18872335

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1\times {\mathrm{389}}^1$

素因数の和:738

約数の個数: 16

約数和(自身を含む): 23512320

約数和(自身を除く): 4639985

約数列:

[1, 5, 31, 155, 313, 389, 1565, 1945, 9703, 12059, 48515, 60295, 121757, 608785, 3774467, 18872335]

約数ペア:

[(1, 18872335), (5, 3774467), (31, 608785), (155, 121757), (313, 60295), (389, 48515), (1565, 12059), (1945, 9703)]