21700490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2441}}^1$

素因数の和:2582

約数の個数: 32

約数和(自身を含む): 45010944

約数和(自身を除く): 23310454

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 127, 254, 635, 889, 1270, 1778, 2441, 4445, 4882, 8890, 12205, 17087, 24410, 34174, 85435, 170870, 310007, 620014, 1550035, 2170049, 3100070, 4340098, 10850245, 21700490]

約数ペア:

[(1, 21700490), (2, 10850245), (5, 4340098), (7, 3100070), (10, 2170049), (14, 1550035), (35, 620014), (70, 310007), (127, 170870), (254, 85435), (635, 34174), (889, 24410), (1270, 17087), (1778, 12205), (2441, 8890), (4445, 4882)]