64645985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{769}}^1$

素因数の和:857

約数の個数: 32

約数和(自身を含む): 87816960

約数和(自身を除く): 23170975

約数列:

[1, 5, 17, 23, 43, 85, 115, 215, 391, 731, 769, 989, 1955, 3655, 3845, 4945, 13073, 16813, 17687, 33067, 65365, 84065, 88435, 165335, 300679, 562139, 760541, 1503395, 2810695, 3802705, 12929197, 64645985]

約数ペア:

[(1, 64645985), (5, 12929197), (17, 3802705), (23, 2810695), (43, 1503395), (85, 760541), (115, 562139), (215, 300679), (391, 165335), (731, 88435), (769, 84065), (989, 65365), (1955, 33067), (3655, 17687), (3845, 16813), (4945, 13073)]