20363420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1889}}^1$

素因数の和:1923

約数の個数: 72

約数和(自身を含む): 54295920

約数和(自身を除く): 33932500

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1889, 2156, 2695, 3778, 5390, 7556, 9445, 10780, 13223, 18890, 20779, 26446, 37780, 41558, 52892, 66115, 83116, 92561, 103895, 132230, 145453, 185122, 207790, 264460, 290906, 370244, 415580, 462805, 581812, 727265, 925610, 1018171, 1454530, 1851220, 2036342, 2909060, 4072684, 5090855, 10181710, 20363420]

約数ペア:

[(1, 20363420), (2, 10181710), (4, 5090855), (5, 4072684), (7, 2909060), (10, 2036342), (11, 1851220), (14, 1454530), (20, 1018171), (22, 925610), (28, 727265), (35, 581812), (44, 462805), (49, 415580), (55, 370244), (70, 290906), (77, 264460), (98, 207790), (110, 185122), (140, 145453), (154, 132230), (196, 103895), (220, 92561), (245, 83116), (308, 66115), (385, 52892), (490, 41558), (539, 37780), (770, 26446), (980, 20779), (1078, 18890), (1540, 13223), (1889, 10780), (2156, 9445), (2695, 7556), (3778, 5390)]