20206540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{577}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 45444672

約数和(自身を除く): 25238132

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 103, 170, 206, 340, 412, 515, 577, 1030, 1154, 1751, 2060, 2308, 2885, 3502, 5770, 7004, 8755, 9809, 11540, 17510, 19618, 35020, 39236, 49045, 59431, 98090, 118862, 196180, 237724, 297155, 594310, 1010327, 1188620, 2020654, 4041308, 5051635, 10103270, 20206540]

約数ペア:

[(1, 20206540), (2, 10103270), (4, 5051635), (5, 4041308), (10, 2020654), (17, 1188620), (20, 1010327), (34, 594310), (68, 297155), (85, 237724), (103, 196180), (170, 118862), (206, 98090), (340, 59431), (412, 49045), (515, 39236), (577, 35020), (1030, 19618), (1154, 17510), (1751, 11540), (2060, 9809), (2308, 8755), (2885, 7004), (3502, 5770)]