20334340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 46336752

約数和(自身を除く): 26002412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 397, 788, 794, 985, 1588, 1970, 1985, 2561, 3940, 3970, 5122, 5161, 7940, 10244, 10322, 12805, 20644, 25610, 25805, 51220, 51610, 78209, 103220, 156418, 312836, 391045, 782090, 1016717, 1564180, 2033434, 4066868, 5083585, 10167170, 20334340]

約数ペア:

[(1, 20334340), (2, 10167170), (4, 5083585), (5, 4066868), (10, 2033434), (13, 1564180), (20, 1016717), (26, 782090), (52, 391045), (65, 312836), (130, 156418), (197, 103220), (260, 78209), (394, 51610), (397, 51220), (788, 25805), (794, 25610), (985, 20644), (1588, 12805), (1970, 10322), (1985, 10244), (2561, 7940), (3940, 5161), (3970, 5122)]