20681988

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{577}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 50494080

約数和(自身を除く): 29812092

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 87, 103, 116, 174, 206, 309, 348, 412, 577, 618, 1154, 1236, 1731, 2308, 2987, 3462, 5974, 6924, 8961, 11948, 16733, 17922, 33466, 35844, 50199, 59431, 66932, 100398, 118862, 178293, 200796, 237724, 356586, 713172, 1723499, 3446998, 5170497, 6893996, 10340994, 20681988]

約数ペア:

[(1, 20681988), (2, 10340994), (3, 6893996), (4, 5170497), (6, 3446998), (12, 1723499), (29, 713172), (58, 356586), (87, 237724), (103, 200796), (116, 178293), (174, 118862), (206, 100398), (309, 66932), (348, 59431), (412, 50199), (577, 35844), (618, 33466), (1154, 17922), (1236, 16733), (1731, 11948), (2308, 8961), (2987, 6924), (3462, 5974)]