197406909

素因数分解:

$3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 347258880

約数和(自身を除く): 149851971

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 71, 141, 189, 213, 313, 329, 423, 497, 639, 939, 987, 1269, 1491, 1917, 2191, 2817, 2961, 3337, 4473, 6573, 8451, 8883, 10011, 13419, 14711, 19719, 22223, 23359, 30033, 44133, 59157, 66669, 70077, 90099, 102977, 132399, 155561, 200007, 210231, 308931, 397197, 466683, 600021, 630693, 926793, 1044481, 1400049, 2780379, 3133443, 4200147, 7311367, 9400329, 21934101, 28200987, 65802303, 197406909]

約数ペア:

[(1, 197406909), (3, 65802303), (7, 28200987), (9, 21934101), (21, 9400329), (27, 7311367), (47, 4200147), (63, 3133443), (71, 2780379), (141, 1400049), (189, 1044481), (213, 926793), (313, 630693), (329, 600021), (423, 466683), (497, 397197), (639, 308931), (939, 210231), (987, 200007), (1269, 155561), (1491, 132399), (1917, 102977), (2191, 90099), (2817, 70077), (2961, 66669), (3337, 59157), (4473, 44133), (6573, 30033), (8451, 23359), (8883, 22223), (10011, 19719), (13419, 14711)]