21284744

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1987}}^1$

素因数の和:2109

約数の個数: 32

約数和(自身を含む): 43417920

約数和(自身を除く): 22133176

約数列:

[1, 2, 4, 8, 13, 26, 52, 103, 104, 206, 412, 824, 1339, 1987, 2678, 3974, 5356, 7948, 10712, 15896, 25831, 51662, 103324, 204661, 206648, 409322, 818644, 1637288, 2660593, 5321186, 10642372, 21284744]

約数ペア:

[(1, 21284744), (2, 10642372), (4, 5321186), (8, 2660593), (13, 1637288), (26, 818644), (52, 409322), (103, 206648), (104, 204661), (206, 103324), (412, 51662), (824, 25831), (1339, 15896), (1987, 10712), (2678, 7948), (3974, 5356)]