189901215

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1213}}^1$

素因数の和:1309

約数の個数: 72

約数和(自身を含む): 388615968

約数和(自身を除く): 198714753

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 71, 105, 147, 213, 245, 315, 355, 441, 497, 639, 735, 1065, 1213, 1491, 2205, 2485, 3195, 3479, 3639, 4473, 6065, 7455, 8491, 10437, 10917, 17395, 18195, 22365, 25473, 31311, 42455, 52185, 54585, 59437, 76419, 86123, 127365, 156555, 178311, 258369, 297185, 382095, 430615, 534933, 602861, 775107, 891555, 1291845, 1808583, 2674665, 3014305, 3875535, 4220027, 5425749, 9042915, 12660081, 21100135, 27128745, 37980243, 63300405, 189901215]

約数ペア:

[(1, 189901215), (3, 63300405), (5, 37980243), (7, 27128745), (9, 21100135), (15, 12660081), (21, 9042915), (35, 5425749), (45, 4220027), (49, 3875535), (63, 3014305), (71, 2674665), (105, 1808583), (147, 1291845), (213, 891555), (245, 775107), (315, 602861), (355, 534933), (441, 430615), (497, 382095), (639, 297185), (735, 258369), (1065, 178311), (1213, 156555), (1491, 127365), (2205, 86123), (2485, 76419), (3195, 59437), (3479, 54585), (3639, 52185), (4473, 42455), (6065, 31311), (7455, 25473), (8491, 22365), (10437, 18195), (10917, 17395)]