2009202020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{1543}}^1$

素因数の和:1761

約数の個数: 96

約数和(自身を含む): 4930523136

約数和(自身を除く): 2921321116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 131, 140, 142, 262, 284, 355, 497, 524, 655, 710, 917, 994, 1310, 1420, 1543, 1834, 1988, 2485, 2620, 3086, 3668, 4585, 4970, 6172, 7715, 9170, 9301, 9940, 10801, 15430, 18340, 18602, 21602, 30860, 37204, 43204, 46505, 54005, 65107, 93010, 108010, 109553, 130214, 186020, 202133, 216020, 219106, 260428, 325535, 404266, 438212, 547765, 651070, 766871, 808532, 1010665, 1095530, 1302140, 1414931, 1533742, 2021330, 2191060, 2829862, 3067484, 3834355, 4042660, 5659724, 7074655, 7668710, 14149310, 14351443, 15337420, 28298620, 28702886, 57405772, 71757215, 100460101, 143514430, 200920202, 287028860, 401840404, 502300505, 1004601010, 2009202020]

約数ペア:

[(1, 2009202020), (2, 1004601010), (4, 502300505), (5, 401840404), (7, 287028860), (10, 200920202), (14, 143514430), (20, 100460101), (28, 71757215), (35, 57405772), (70, 28702886), (71, 28298620), (131, 15337420), (140, 14351443), (142, 14149310), (262, 7668710), (284, 7074655), (355, 5659724), (497, 4042660), (524, 3834355), (655, 3067484), (710, 2829862), (917, 2191060), (994, 2021330), (1310, 1533742), (1420, 1414931), (1543, 1302140), (1834, 1095530), (1988, 1010665), (2485, 808532), (2620, 766871), (3086, 651070), (3668, 547765), (4585, 438212), (4970, 404266), (6172, 325535), (7715, 260428), (9170, 219106), (9301, 216020), (9940, 202133), (10801, 186020), (15430, 130214), (18340, 109553), (18602, 108010), (21602, 93010), (30860, 65107), (37204, 54005), (43204, 46505)]