201621861

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103237}}^1$

素因数の和:103281

約数の個数: 24

約数和(自身を含む): 343576064

約数和(自身を除く): 141954203

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 103237, 309711, 722659, 929133, 2167977, 3200347, 6503931, 9601041, 22402429, 28803123, 67207287, 201621861]

約数ペア:

[(1, 201621861), (3, 67207287), (7, 28803123), (9, 22402429), (21, 9601041), (31, 6503931), (63, 3200347), (93, 2167977), (217, 929133), (279, 722659), (651, 309711), (1953, 103237)]