31279640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{15959}}^1$

素因数の和:15984

約数の個数: 48

約数和(自身を含む): 81874800

約数和(自身を除く): 50595160

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, 15959, 31918, 63836, 79795, 111713, 127672, 159590, 223426, 319180, 446852, 558565, 638360, 781991, 893704, 1117130, 1563982, 2234260, 3127964, 3909955, 4468520, 6255928, 7819910, 15639820, 31279640]

約数ペア:

[(1, 31279640), (2, 15639820), (4, 7819910), (5, 6255928), (7, 4468520), (8, 3909955), (10, 3127964), (14, 2234260), (20, 1563982), (28, 1117130), (35, 893704), (40, 781991), (49, 638360), (56, 558565), (70, 446852), (98, 319180), (140, 223426), (196, 159590), (245, 127672), (280, 111713), (392, 79795), (490, 63836), (980, 31918), (1960, 15959)]