21399378

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:552

約数の個数: 96

約数和(自身を含む): 58605120

約数和(自身を除く): 37205742

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 49, 66, 77, 78, 91, 98, 143, 147, 154, 182, 231, 273, 286, 294, 429, 462, 509, 539, 546, 637, 858, 1001, 1018, 1078, 1274, 1527, 1617, 1911, 2002, 3003, 3054, 3234, 3563, 3822, 5599, 6006, 6617, 7007, 7126, 10689, 11198, 13234, 14014, 16797, 19851, 21021, 21378, 24941, 33594, 39193, 39702, 42042, 46319, 49882, 72787, 74823, 78386, 92638, 117579, 138957, 145574, 149646, 218361, 235158, 274351, 277914, 324233, 436722, 509509, 548702, 648466, 823053, 972699, 1019018, 1528527, 1646106, 1945398, 3057054, 3566563, 7133126, 10699689, 21399378]

約数ペア:

[(1, 21399378), (2, 10699689), (3, 7133126), (6, 3566563), (7, 3057054), (11, 1945398), (13, 1646106), (14, 1528527), (21, 1019018), (22, 972699), (26, 823053), (33, 648466), (39, 548702), (42, 509509), (49, 436722), (66, 324233), (77, 277914), (78, 274351), (91, 235158), (98, 218361), (143, 149646), (147, 145574), (154, 138957), (182, 117579), (231, 92638), (273, 78386), (286, 74823), (294, 72787), (429, 49882), (462, 46319), (509, 42042), (539, 39702), (546, 39193), (637, 33594), (858, 24941), (1001, 21378), (1018, 21021), (1078, 19851), (1274, 16797), (1527, 14014), (1617, 13234), (1911, 11198), (2002, 10689), (3003, 7126), (3054, 7007), (3234, 6617), (3563, 6006), (3822, 5599)]