18618015

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{311}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 13670241

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 307, 311, 921, 933, 1535, 1555, 3991, 4043, 4605, 4665, 11973, 12129, 19955, 20215, 59865, 60645, 95477, 286431, 477385, 1241201, 1432155, 3723603, 6206005, 18618015]

約数ペア:

[(1, 18618015), (3, 6206005), (5, 3723603), (13, 1432155), (15, 1241201), (39, 477385), (65, 286431), (195, 95477), (307, 60645), (311, 59865), (921, 20215), (933, 19955), (1535, 12129), (1555, 11973), (3991, 4665), (4043, 4605)]