206979591

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:752

約数の個数: 64

約数和(自身を含む): 360636416

約数和(自身を除く): 153656825

約数列:

[1, 3, 7, 13, 21, 31, 37, 39, 91, 93, 111, 217, 259, 273, 403, 481, 651, 661, 777, 1147, 1209, 1443, 1983, 2821, 3367, 3441, 4627, 8029, 8463, 8593, 10101, 13881, 14911, 20491, 24087, 24457, 25779, 44733, 60151, 61473, 73371, 104377, 143437, 171199, 180453, 266383, 313131, 317941, 430311, 513597, 758167, 799149, 953823, 1864681, 2225587, 2274501, 5307169, 5594043, 6676761, 9856171, 15921507, 29568513, 68993197, 206979591]

約数ペア:

[(1, 206979591), (3, 68993197), (7, 29568513), (13, 15921507), (21, 9856171), (31, 6676761), (37, 5594043), (39, 5307169), (91, 2274501), (93, 2225587), (111, 1864681), (217, 953823), (259, 799149), (273, 758167), (403, 513597), (481, 430311), (651, 317941), (661, 313131), (777, 266383), (1147, 180453), (1209, 171199), (1443, 143437), (1983, 104377), (2821, 73371), (3367, 61473), (3441, 60151), (4627, 44733), (8029, 25779), (8463, 24457), (8593, 24087), (10101, 20491), (13881, 14911)]