212587515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1021}}^1$

素因数の和:1700

約数の個数: 48

約数和(自身を含む): 422175936

約数和(自身を除く): 209588421

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 661, 1021, 1983, 3063, 3305, 4627, 5105, 5949, 7147, 9189, 9915, 13881, 15315, 21441, 23135, 29745, 35735, 41643, 45945, 64323, 69405, 107205, 208215, 321615, 674881, 2024643, 3374405, 4724167, 6073929, 10123215, 14172501, 23620835, 30369645, 42517503, 70862505, 212587515]

約数ペア:

[(1, 212587515), (3, 70862505), (5, 42517503), (7, 30369645), (9, 23620835), (15, 14172501), (21, 10123215), (35, 6073929), (45, 4724167), (63, 3374405), (105, 2024643), (315, 674881), (661, 321615), (1021, 208215), (1983, 107205), (3063, 69405), (3305, 64323), (4627, 45945), (5105, 41643), (5949, 35735), (7147, 29745), (9189, 23135), (9915, 21441), (13881, 15315)]