20921519073

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{1039}}^1$

素因数の和:1367

約数の個数: 96

約数和(自身を含む): 35972052480

約数和(自身を除く): 15050533407

約数列:

[1, 3, 7, 13, 21, 39, 41, 49, 91, 123, 147, 257, 273, 287, 533, 637, 771, 861, 1039, 1599, 1799, 1911, 2009, 3117, 3341, 3731, 5397, 6027, 7273, 10023, 10537, 11193, 12593, 13507, 21819, 23387, 26117, 31611, 37779, 40521, 42599, 50911, 70161, 73759, 78351, 94549, 127797, 136981, 152733, 163709, 221277, 267023, 283647, 298193, 410943, 491127, 516313, 553787, 661843, 801069, 894579, 958867, 1548939, 1661361, 1869161, 1985529, 2087351, 2876601, 3471299, 3876509, 5607483, 6262053, 6712069, 10413897, 10947943, 11629527, 13084127, 20136207, 24299093, 27135563, 32843829, 39252381, 72897279, 76635601, 81406689, 142323259, 170093651, 229906803, 426969777, 510280953, 536449207, 996262813, 1609347621, 2988788439, 6973839691, 20921519073]

約数ペア:

[(1, 20921519073), (3, 6973839691), (7, 2988788439), (13, 1609347621), (21, 996262813), (39, 536449207), (41, 510280953), (49, 426969777), (91, 229906803), (123, 170093651), (147, 142323259), (257, 81406689), (273, 76635601), (287, 72897279), (533, 39252381), (637, 32843829), (771, 27135563), (861, 24299093), (1039, 20136207), (1599, 13084127), (1799, 11629527), (1911, 10947943), (2009, 10413897), (3117, 6712069), (3341, 6262053), (3731, 5607483), (5397, 3876509), (6027, 3471299), (7273, 2876601), (10023, 2087351), (10537, 1985529), (11193, 1869161), (12593, 1661361), (13507, 1548939), (21819, 958867), (23387, 894579), (26117, 801069), (31611, 661843), (37779, 553787), (40521, 516313), (42599, 491127), (50911, 410943), (70161, 298193), (73759, 283647), (78351, 267023), (94549, 221277), (127797, 163709), (136981, 152733)]