18555381

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 32235840

約数和(自身を除く): 13680459

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 117, 153, 171, 221, 247, 323, 491, 663, 741, 969, 1473, 1989, 2223, 2907, 4199, 4419, 6383, 8347, 9329, 12597, 19149, 25041, 27987, 37791, 57447, 75123, 83961, 108511, 121277, 158593, 325533, 363831, 475779, 976599, 1091493, 1427337, 2061709, 6185127, 18555381]

約数ペア:

[(1, 18555381), (3, 6185127), (9, 2061709), (13, 1427337), (17, 1091493), (19, 976599), (39, 475779), (51, 363831), (57, 325533), (117, 158593), (153, 121277), (171, 108511), (221, 83961), (247, 75123), (323, 57447), (491, 37791), (663, 27987), (741, 25041), (969, 19149), (1473, 12597), (1989, 9329), (2223, 8347), (2907, 6383), (4199, 4419)]