21687393

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4673}}^1$

素因数の和:4713

約数の個数: 32

約数和(自身を含む): 37691136

約数和(自身を除く): 16003743

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 4673, 14019, 32711, 60749, 79441, 98133, 182247, 238323, 425243, 556087, 1032733, 1275729, 1668261, 3098199, 7229131, 21687393]

約数ペア:

[(1, 21687393), (3, 7229131), (7, 3098199), (13, 1668261), (17, 1275729), (21, 1032733), (39, 556087), (51, 425243), (91, 238323), (119, 182247), (221, 98133), (273, 79441), (357, 60749), (663, 32711), (1547, 14019), (4641, 4673)]