1998220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{2039}}^1$

素因数の和:2062

約数の個数: 36

約数和(自身を含む): 4883760

約数和(自身を除く): 2885540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 2039, 4078, 8156, 10195, 14273, 20390, 28546, 40780, 57092, 71365, 99911, 142730, 199822, 285460, 399644, 499555, 999110, 1998220]

約数ペア:

[(1, 1998220), (2, 999110), (4, 499555), (5, 399644), (7, 285460), (10, 199822), (14, 142730), (20, 99911), (28, 71365), (35, 57092), (49, 40780), (70, 28546), (98, 20390), (140, 14273), (196, 10195), (245, 8156), (490, 4078), (980, 2039)]