20580490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:551

約数の個数: 48

約数和(自身を含む): 43637832

約数和(自身を除く): 23057342

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 97, 98, 194, 245, 433, 485, 490, 679, 866, 970, 1358, 2165, 3031, 3395, 4330, 4753, 6062, 6790, 9506, 15155, 21217, 23765, 30310, 42001, 42434, 47530, 84002, 106085, 210005, 212170, 294007, 420010, 588014, 1470035, 2058049, 2940070, 4116098, 10290245, 20580490]

約数ペア:

[(1, 20580490), (2, 10290245), (5, 4116098), (7, 2940070), (10, 2058049), (14, 1470035), (35, 588014), (49, 420010), (70, 294007), (97, 212170), (98, 210005), (194, 106085), (245, 84002), (433, 47530), (485, 42434), (490, 42001), (679, 30310), (866, 23765), (970, 21217), (1358, 15155), (2165, 9506), (3031, 6790), (3395, 6062), (4330, 4753)]