208524771

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{881}}^1$

素因数の和:941

約数の個数: 72

約数和(自身を含む): 394246944

約数和(自身を除く): 185722173

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 289, 357, 663, 819, 867, 881, 1071, 1547, 1989, 2023, 2601, 2643, 3757, 4641, 6069, 6167, 7929, 11271, 11453, 13923, 14977, 18207, 18501, 26299, 33813, 34359, 44931, 55503, 78897, 80171, 103077, 104839, 134793, 194701, 236691, 240513, 254609, 314517, 584103, 721539, 763827, 943551, 1362907, 1752309, 1782263, 2291481, 3309917, 4088721, 5346789, 9929751, 12266163, 16040367, 23169419, 29789253, 69508257, 208524771]

約数ペア:

[(1, 208524771), (3, 69508257), (7, 29789253), (9, 23169419), (13, 16040367), (17, 12266163), (21, 9929751), (39, 5346789), (51, 4088721), (63, 3309917), (91, 2291481), (117, 1782263), (119, 1752309), (153, 1362907), (221, 943551), (273, 763827), (289, 721539), (357, 584103), (663, 314517), (819, 254609), (867, 240513), (881, 236691), (1071, 194701), (1547, 134793), (1989, 104839), (2023, 103077), (2601, 80171), (2643, 78897), (3757, 55503), (4641, 44931), (6069, 34359), (6167, 33813), (7929, 26299), (11271, 18501), (11453, 18207), (13923, 14977)]