21491176216

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{251}}^1\times {\mathrm{283}}^1\times {\mathrm{641}}^1$

素因数の和:1240

約数の個数: 64

約数和(自身を含む): 41351990400

約数和(自身を除く): 19860814184

約数列:

[1, 2, 4, 8, 59, 118, 236, 251, 283, 472, 502, 566, 641, 1004, 1132, 1282, 2008, 2264, 2564, 5128, 14809, 16697, 29618, 33394, 37819, 59236, 66788, 71033, 75638, 118472, 133576, 142066, 151276, 160891, 181403, 284132, 302552, 321782, 362806, 568264, 643564, 725612, 1287128, 1451224, 4190947, 8381894, 9492569, 10702777, 16763788, 18985138, 21405554, 33527576, 37970276, 42811108, 45532153, 75940552, 85622216, 91064306, 182128612, 364257224, 2686397027, 5372794054, 10745588108, 21491176216]

約数ペア:

[(1, 21491176216), (2, 10745588108), (4, 5372794054), (8, 2686397027), (59, 364257224), (118, 182128612), (236, 91064306), (251, 85622216), (283, 75940552), (472, 45532153), (502, 42811108), (566, 37970276), (641, 33527576), (1004, 21405554), (1132, 18985138), (1282, 16763788), (2008, 10702777), (2264, 9492569), (2564, 8381894), (5128, 4190947), (14809, 1451224), (16697, 1287128), (29618, 725612), (33394, 643564), (37819, 568264), (59236, 362806), (66788, 321782), (71033, 302552), (75638, 284132), (118472, 181403), (133576, 160891), (142066, 151276)]