20161786840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38772667}}^1$

素因数の和:38772691

約数の個数: 32

約数和(自身を含む): 48853561680

約数和(自身を除く): 28691774840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38772667, 77545334, 155090668, 193863335, 310181336, 387726670, 504044671, 775453340, 1008089342, 1550906680, 2016178684, 2520223355, 4032357368, 5040446710, 10080893420, 20161786840]

約数ペア:

[(1, 20161786840), (2, 10080893420), (4, 5040446710), (5, 4032357368), (8, 2520223355), (10, 2016178684), (13, 1550906680), (20, 1008089342), (26, 775453340), (40, 504044671), (52, 387726670), (65, 310181336), (104, 193863335), (130, 155090668), (260, 77545334), (520, 38772667)]