72890289

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 118609920

約数和(自身を除く): 45719631

約数列:

[1, 3, 9, 19, 23, 43, 57, 69, 129, 171, 207, 387, 431, 437, 817, 989, 1293, 1311, 2451, 2967, 3879, 3933, 7353, 8189, 8901, 9913, 18533, 18791, 24567, 29739, 55599, 56373, 73701, 89217, 166797, 169119, 188347, 352127, 426259, 565041, 1056381, 1278777, 1695123, 3169143, 3836331, 8098921, 24296763, 72890289]

約数ペア:

[(1, 72890289), (3, 24296763), (9, 8098921), (19, 3836331), (23, 3169143), (43, 1695123), (57, 1278777), (69, 1056381), (129, 565041), (171, 426259), (207, 352127), (387, 188347), (431, 169119), (437, 166797), (817, 89217), (989, 73701), (1293, 56373), (1311, 55599), (2451, 29739), (2967, 24567), (3879, 18791), (3933, 18533), (7353, 9913), (8189, 8901)]