20543900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15803}}^1$

素因数の和:15830

約数の個数: 36

約数和(自身を含む): 48012552

約数和(自身を除く): 27468652

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15803, 31606, 63212, 79015, 158030, 205439, 316060, 395075, 410878, 790150, 821756, 1027195, 1580300, 2054390, 4108780, 5135975, 10271950, 20543900]

約数ペア:

[(1, 20543900), (2, 10271950), (4, 5135975), (5, 4108780), (10, 2054390), (13, 1580300), (20, 1027195), (25, 821756), (26, 790150), (50, 410878), (52, 395075), (65, 316060), (100, 205439), (130, 158030), (260, 79015), (325, 63212), (650, 31606), (1300, 15803)]