289131472

素因数分解:

$2^4\times 7^1\times {\mathrm{2581531}}^1$

素因数の和:2581546

約数の個数: 20

約数和(自身を含む): 640219936

約数和(自身を除く): 351088464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 2581531, 5163062, 10326124, 18070717, 20652248, 36141434, 41304496, 72282868, 144565736, 289131472]

約数ペア:

[(1, 289131472), (2, 144565736), (4, 72282868), (7, 41304496), (8, 36141434), (14, 20652248), (16, 18070717), (28, 10326124), (56, 5163062), (112, 2581531)]