28864857

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{991}}^1$

素因数の和:1093

約数の個数: 32

約数和(自身を含む): 46981120

約数和(自身を除く): 18116263

約数列:

[1, 3, 7, 19, 21, 57, 73, 133, 219, 399, 511, 991, 1387, 1533, 2973, 4161, 6937, 9709, 18829, 20811, 29127, 56487, 72343, 131803, 217029, 395409, 506401, 1374517, 1519203, 4123551, 9621619, 28864857]

約数ペア:

[(1, 28864857), (3, 9621619), (7, 4123551), (19, 1519203), (21, 1374517), (57, 506401), (73, 395409), (133, 217029), (219, 131803), (399, 72343), (511, 56487), (991, 29127), (1387, 20811), (1533, 18829), (2973, 9709), (4161, 6937)]