198247777

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2239}}^1$

素因数の和:2405

約数の個数: 24

約数和(自身を含む): 250252800

約数和(自身を除く): 52005023

約数列:

[1, 7, 13, 49, 91, 139, 637, 973, 1807, 2239, 6811, 12649, 15673, 29107, 88543, 109711, 203749, 311221, 1426243, 2178547, 4045873, 15249829, 28321111, 198247777]

約数ペア:

[(1, 198247777), (7, 28321111), (13, 15249829), (49, 4045873), (91, 2178547), (139, 1426243), (637, 311221), (973, 203749), (1807, 109711), (2239, 88543), (6811, 29107), (12649, 15673)]