20593040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19801}}^1$

素因数の和:19827

約数の個数: 40

約数和(自身を含む): 51564408

約数和(自身を除く): 30971368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19801, 39602, 79204, 99005, 158408, 198010, 257413, 316816, 396020, 514826, 792040, 1029652, 1287065, 1584080, 2059304, 2574130, 4118608, 5148260, 10296520, 20593040]

約数ペア:

[(1, 20593040), (2, 10296520), (4, 5148260), (5, 4118608), (8, 2574130), (10, 2059304), (13, 1584080), (16, 1287065), (20, 1029652), (26, 792040), (40, 514826), (52, 396020), (65, 316816), (80, 257413), (104, 198010), (130, 158408), (208, 99005), (260, 79204), (520, 39602), (1040, 19801)]