20339500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2141}}^1$

素因数の和:2179

約数の個数: 48

約数和(自身を含む): 46781280

約数和(自身を除く): 26441780

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2141, 2375, 4282, 4750, 8564, 9500, 10705, 21410, 40679, 42820, 53525, 81358, 107050, 162716, 203395, 214100, 267625, 406790, 535250, 813580, 1016975, 1070500, 2033950, 4067900, 5084875, 10169750, 20339500]

約数ペア:

[(1, 20339500), (2, 10169750), (4, 5084875), (5, 4067900), (10, 2033950), (19, 1070500), (20, 1016975), (25, 813580), (38, 535250), (50, 406790), (76, 267625), (95, 214100), (100, 203395), (125, 162716), (190, 107050), (250, 81358), (380, 53525), (475, 42820), (500, 40679), (950, 21410), (1900, 10705), (2141, 9500), (2375, 8564), (4282, 4750)]