81084172

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 166017600

約数和(自身を除く): 84933428

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 59, 76, 107, 118, 169, 214, 236, 247, 338, 428, 494, 676, 767, 988, 1121, 1391, 1534, 2033, 2242, 2782, 3068, 3211, 4066, 4484, 5564, 6313, 6422, 8132, 9971, 12626, 12844, 14573, 18083, 19942, 25252, 26429, 29146, 36166, 39884, 52858, 58292, 72332, 82069, 105716, 119947, 164138, 189449, 239894, 328276, 343577, 378898, 479788, 687154, 757796, 1066897, 1374308, 1559311, 2133794, 3118622, 4267588, 6237244, 20271043, 40542086, 81084172]

約数ペア:

[(1, 81084172), (2, 40542086), (4, 20271043), (13, 6237244), (19, 4267588), (26, 3118622), (38, 2133794), (52, 1559311), (59, 1374308), (76, 1066897), (107, 757796), (118, 687154), (169, 479788), (214, 378898), (236, 343577), (247, 328276), (338, 239894), (428, 189449), (494, 164138), (676, 119947), (767, 105716), (988, 82069), (1121, 72332), (1391, 58292), (1534, 52858), (2033, 39884), (2242, 36166), (2782, 29146), (3068, 26429), (3211, 25252), (4066, 19942), (4484, 18083), (5564, 14573), (6313, 12844), (6422, 12626), (8132, 9971)]