20419850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 41890176

約数和(自身を除く): 21470326

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 137, 271, 274, 275, 542, 550, 685, 1355, 1370, 1507, 2710, 2981, 3014, 3425, 5962, 6775, 6850, 7535, 13550, 14905, 15070, 29810, 37127, 37675, 74254, 74525, 75350, 149050, 185635, 371270, 408397, 816794, 928175, 1856350, 2041985, 4083970, 10209925, 20419850]

約数ペア:

[(1, 20419850), (2, 10209925), (5, 4083970), (10, 2041985), (11, 1856350), (22, 928175), (25, 816794), (50, 408397), (55, 371270), (110, 185635), (137, 149050), (271, 75350), (274, 74525), (275, 74254), (542, 37675), (550, 37127), (685, 29810), (1355, 15070), (1370, 14905), (1507, 13550), (2710, 7535), (2981, 6850), (3014, 6775), (3425, 5962)]