20121571323

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{155119}}^1$

素因数の和:155232

約数の個数: 48

約数和(自身を含む): 34846156800

約数和(自身を除く): 14724585477

約数列:

[1, 3, 7, 9, 21, 29, 63, 71, 87, 203, 213, 261, 497, 609, 639, 1491, 1827, 2059, 4473, 6177, 14413, 18531, 43239, 129717, 155119, 465357, 1085833, 1396071, 3257499, 4498451, 9772497, 11013449, 13495353, 31489157, 33040347, 40486059, 77094143, 94467471, 99121041, 231282429, 283402413, 319390021, 693847287, 958170063, 2235730147, 2874510189, 6707190441, 20121571323]

約数ペア:

[(1, 20121571323), (3, 6707190441), (7, 2874510189), (9, 2235730147), (21, 958170063), (29, 693847287), (63, 319390021), (71, 283402413), (87, 231282429), (203, 99121041), (213, 94467471), (261, 77094143), (497, 40486059), (609, 33040347), (639, 31489157), (1491, 13495353), (1827, 11013449), (2059, 9772497), (4473, 4498451), (6177, 3257499), (14413, 1396071), (18531, 1085833), (43239, 465357), (129717, 155119)]