217626520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{320039}}^1$

素因数の和:320067

約数の個数: 32

約数和(自身を含む): 518464800

約数和(自身を除く): 300838280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 320039, 640078, 1280156, 1600195, 2560312, 3200390, 5440663, 6400780, 10881326, 12801560, 21762652, 27203315, 43525304, 54406630, 108813260, 217626520]

約数ペア:

[(1, 217626520), (2, 108813260), (4, 54406630), (5, 43525304), (8, 27203315), (10, 21762652), (17, 12801560), (20, 10881326), (34, 6400780), (40, 5440663), (68, 3200390), (85, 2560312), (136, 1600195), (170, 1280156), (340, 640078), (680, 320039)]