80821580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82471}}^1$

素因数の和:82494

約数の個数: 36

約数和(自身を含む): 197437968

約数和(自身を除く): 116616388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82471, 164942, 329884, 412355, 577297, 824710, 1154594, 1649420, 2309188, 2886485, 4041079, 5772970, 8082158, 11545940, 16164316, 20205395, 40410790, 80821580]

約数ペア:

[(1, 80821580), (2, 40410790), (4, 20205395), (5, 16164316), (7, 11545940), (10, 8082158), (14, 5772970), (20, 4041079), (28, 2886485), (35, 2309188), (49, 1649420), (70, 1154594), (98, 824710), (140, 577297), (196, 412355), (245, 329884), (490, 164942), (980, 82471)]