21090790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{599}}^1$

素因数の和:1116

約数の個数: 32

約数和(自身を含む): 43545600

約数和(自身を除く): 22454810

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 503, 599, 1006, 1198, 2515, 2995, 3521, 4193, 5030, 5990, 7042, 8386, 17605, 20965, 35210, 41930, 301297, 602594, 1506485, 2109079, 3012970, 4218158, 10545395, 21090790]

約数ペア:

[(1, 21090790), (2, 10545395), (5, 4218158), (7, 3012970), (10, 2109079), (14, 1506485), (35, 602594), (70, 301297), (503, 41930), (599, 35210), (1006, 20965), (1198, 17605), (2515, 8386), (2995, 7042), (3521, 5990), (4193, 5030)]