20953868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7603}}^1$

素因数の和:7673

約数の個数: 24

約数和(自身を含む): 40240368

約数和(自身を除く): 19286500

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7603, 15206, 30412, 98839, 197678, 395356, 402959, 805918, 1611836, 5238467, 10476934, 20953868]

約数ペア:

[(1, 20953868), (2, 10476934), (4, 5238467), (13, 1611836), (26, 805918), (52, 402959), (53, 395356), (106, 197678), (212, 98839), (689, 30412), (1378, 15206), (2756, 7603)]