31189480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{15913}}^1$

素因数の和:15938

約数の個数: 48

約数和(自身を含む): 81638820

約数和(自身を除く): 50449340

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 15913, 31826, 63652, 79565, 111391, 127304, 159130, 222782, 318260, 445564, 556955, 636520, 779737, 891128, 1113910, 1559474, 2227820, 3118948, 3898685, 4455640, 6237896, 7797370, 15594740, 31189480]

約数ペア:

[(1, 31189480), (2, 15594740), (4, 7797370), (5, 6237896), (7, 4455640), (8, 3898685), (10, 3118948), (14, 2227820), (20, 1559474), (28, 1113910), (35, 891128), (40, 779737), (49, 636520), (56, 556955), (70, 445564), (98, 318260), (140, 222782), (196, 159130), (245, 127304), (280, 111391), (392, 79565), (490, 63652), (980, 31826), (1960, 15913)]