20485952

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1039

約数の個数: 56

約数和(自身を含む): 45354240

約数和(自身を除く): 24868288

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 136, 152, 272, 304, 323, 544, 608, 646, 991, 1088, 1216, 1292, 1982, 2584, 3964, 5168, 7928, 10336, 15856, 16847, 18829, 20672, 31712, 33694, 37658, 63424, 67388, 75316, 134776, 150632, 269552, 301264, 320093, 539104, 602528, 640186, 1078208, 1205056, 1280372, 2560744, 5121488, 10242976, 20485952]

約数ペア:

[(1, 20485952), (2, 10242976), (4, 5121488), (8, 2560744), (16, 1280372), (17, 1205056), (19, 1078208), (32, 640186), (34, 602528), (38, 539104), (64, 320093), (68, 301264), (76, 269552), (136, 150632), (152, 134776), (272, 75316), (304, 67388), (323, 63424), (544, 37658), (608, 33694), (646, 31712), (991, 20672), (1088, 18829), (1216, 16847), (1292, 15856), (1982, 10336), (2584, 7928), (3964, 5168)]