17990980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1201}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 43618176

約数和(自身を除く): 25627196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1201, 1498, 2140, 2402, 2996, 3745, 4804, 6005, 7490, 8407, 12010, 14980, 16814, 24020, 33628, 42035, 84070, 128507, 168140, 257014, 514028, 642535, 899549, 1285070, 1799098, 2570140, 3598196, 4497745, 8995490, 17990980]

約数ペア:

[(1, 17990980), (2, 8995490), (4, 4497745), (5, 3598196), (7, 2570140), (10, 1799098), (14, 1285070), (20, 899549), (28, 642535), (35, 514028), (70, 257014), (107, 168140), (140, 128507), (214, 84070), (428, 42035), (535, 33628), (749, 24020), (1070, 16814), (1201, 14980), (1498, 12010), (2140, 8407), (2402, 7490), (2996, 6005), (3745, 4804)]