72821931

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 129441024

約数和(自身を除く): 56619093

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 71, 91, 119, 169, 213, 221, 273, 289, 357, 497, 507, 663, 867, 923, 1183, 1207, 1491, 1547, 2023, 2769, 2873, 3549, 3621, 3757, 4641, 6069, 6461, 8449, 8619, 11271, 11999, 15691, 19383, 20111, 20519, 25347, 26299, 35997, 47073, 48841, 60333, 61557, 78897, 83993, 109837, 143633, 146523, 203983, 251979, 266747, 329511, 341887, 430899, 611949, 800241, 1025661, 1427881, 1867229, 3467711, 4283643, 5601687, 10403133, 24273977, 72821931]

約数ペア:

[(1, 72821931), (3, 24273977), (7, 10403133), (13, 5601687), (17, 4283643), (21, 3467711), (39, 1867229), (51, 1427881), (71, 1025661), (91, 800241), (119, 611949), (169, 430899), (213, 341887), (221, 329511), (273, 266747), (289, 251979), (357, 203983), (497, 146523), (507, 143633), (663, 109837), (867, 83993), (923, 78897), (1183, 61557), (1207, 60333), (1491, 48841), (1547, 47073), (2023, 35997), (2769, 26299), (2873, 25347), (3549, 20519), (3621, 20111), (3757, 19383), (4641, 15691), (6069, 11999), (6461, 11271), (8449, 8619)]