20655680

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3797}}^1$

素因数の和:3831

約数の個数: 56

約数和(自身を含む): 52093368

約数和(自身を除く): 31437688

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3797, 5440, 7594, 15188, 18985, 30376, 37970, 60752, 64549, 75940, 121504, 129098, 151880, 243008, 258196, 303760, 322745, 516392, 607520, 645490, 1032784, 1215040, 1290980, 2065568, 2581960, 4131136, 5163920, 10327840, 20655680]

約数ペア:

[(1, 20655680), (2, 10327840), (4, 5163920), (5, 4131136), (8, 2581960), (10, 2065568), (16, 1290980), (17, 1215040), (20, 1032784), (32, 645490), (34, 607520), (40, 516392), (64, 322745), (68, 303760), (80, 258196), (85, 243008), (136, 151880), (160, 129098), (170, 121504), (272, 75940), (320, 64549), (340, 60752), (544, 37970), (680, 30376), (1088, 18985), (1360, 15188), (2720, 7594), (3797, 5440)]