977207980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{997151}}^1$

素因数の和:997174

約数の個数: 36

約数和(自身を含む): 2387181888

約数和(自身を除く): 1409973908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 997151, 1994302, 3988604, 4985755, 6980057, 9971510, 13960114, 19943020, 27920228, 34900285, 48860399, 69800570, 97720798, 139601140, 195441596, 244301995, 488603990, 977207980]

約数ペア:

[(1, 977207980), (2, 488603990), (4, 244301995), (5, 195441596), (7, 139601140), (10, 97720798), (14, 69800570), (20, 48860399), (28, 34900285), (35, 27920228), (49, 19943020), (70, 13960114), (98, 9971510), (140, 6980057), (196, 4985755), (245, 3988604), (490, 1994302), (980, 997151)]