640076520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{313763}}^1$

素因数の和:313794

約数の個数: 64

約数和(自身を含む): 2033190720

約数和(自身を除く): 1393114200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 313763, 627526, 941289, 1255052, 1568815, 1882578, 2510104, 3137630, 3765156, 4706445, 5333971, 6275260, 7530312, 9412890, 10667942, 12550520, 16001913, 18825780, 21335884, 26669855, 32003826, 37651560, 42671768, 53339710, 64007652, 80009565, 106679420, 128015304, 160019130, 213358840, 320038260, 640076520]

約数ペア:

[(1, 640076520), (2, 320038260), (3, 213358840), (4, 160019130), (5, 128015304), (6, 106679420), (8, 80009565), (10, 64007652), (12, 53339710), (15, 42671768), (17, 37651560), (20, 32003826), (24, 26669855), (30, 21335884), (34, 18825780), (40, 16001913), (51, 12550520), (60, 10667942), (68, 9412890), (85, 7530312), (102, 6275260), (120, 5333971), (136, 4706445), (170, 3765156), (204, 3137630), (255, 2510104), (340, 1882578), (408, 1568815), (510, 1255052), (680, 941289), (1020, 627526), (2040, 313763)]