20320144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{463}}^1$

素因数の和:695

約数の個数: 40

約数和(自身を含む): 42691712

約数和(自身を除く): 22371568

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 211, 422, 463, 844, 926, 1688, 1852, 2743, 3376, 3704, 5486, 6019, 7408, 10972, 12038, 21944, 24076, 43888, 48152, 96304, 97693, 195386, 390772, 781544, 1270009, 1563088, 2540018, 5080036, 10160072, 20320144]

約数ペア:

[(1, 20320144), (2, 10160072), (4, 5080036), (8, 2540018), (13, 1563088), (16, 1270009), (26, 781544), (52, 390772), (104, 195386), (208, 97693), (211, 96304), (422, 48152), (463, 43888), (844, 24076), (926, 21944), (1688, 12038), (1852, 10972), (2743, 7408), (3376, 6019), (3704, 5486)]