20991048

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3541}}^1$

素因数の和:3582

約数の個数: 64

約数和(自身を含む): 59505600

約数和(自身を除く): 38514552

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 24, 26, 38, 39, 52, 57, 76, 78, 104, 114, 152, 156, 228, 247, 312, 456, 494, 741, 988, 1482, 1976, 2964, 3541, 5928, 7082, 10623, 14164, 21246, 28328, 42492, 46033, 67279, 84984, 92066, 134558, 138099, 184132, 201837, 269116, 276198, 368264, 403674, 538232, 552396, 807348, 874627, 1104792, 1614696, 1749254, 2623881, 3498508, 5247762, 6997016, 10495524, 20991048]

約数ペア:

[(1, 20991048), (2, 10495524), (3, 6997016), (4, 5247762), (6, 3498508), (8, 2623881), (12, 1749254), (13, 1614696), (19, 1104792), (24, 874627), (26, 807348), (38, 552396), (39, 538232), (52, 403674), (57, 368264), (76, 276198), (78, 269116), (104, 201837), (114, 184132), (152, 138099), (156, 134558), (228, 92066), (247, 84984), (312, 67279), (456, 46033), (494, 42492), (741, 28328), (988, 21246), (1482, 14164), (1976, 10623), (2964, 7082), (3541, 5928)]