20968948

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5237}}^1$

素因数の和:5272

約数の個数: 48

約数和(自身を含む): 49279104

約数和(自身を除く): 28310156

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5237, 10474, 20948, 36659, 57607, 68081, 73318, 115214, 136162, 146636, 230428, 272324, 403249, 476567, 748891, 806498, 953134, 1497782, 1612996, 1906268, 2995564, 5242237, 10484474, 20968948]

約数ペア:

[(1, 20968948), (2, 10484474), (4, 5242237), (7, 2995564), (11, 1906268), (13, 1612996), (14, 1497782), (22, 953134), (26, 806498), (28, 748891), (44, 476567), (52, 403249), (77, 272324), (91, 230428), (143, 146636), (154, 136162), (182, 115214), (286, 73318), (308, 68081), (364, 57607), (572, 36659), (1001, 20948), (2002, 10474), (4004, 5237)]