20840204

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{953}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 25318132

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 71, 77, 142, 154, 284, 308, 497, 781, 953, 994, 1562, 1906, 1988, 3124, 3812, 5467, 6671, 10483, 10934, 13342, 20966, 21868, 26684, 41932, 67663, 73381, 135326, 146762, 270652, 293524, 473641, 744293, 947282, 1488586, 1894564, 2977172, 5210051, 10420102, 20840204]

約数ペア:

[(1, 20840204), (2, 10420102), (4, 5210051), (7, 2977172), (11, 1894564), (14, 1488586), (22, 947282), (28, 744293), (44, 473641), (71, 293524), (77, 270652), (142, 146762), (154, 135326), (284, 73381), (308, 67663), (497, 41932), (781, 26684), (953, 21868), (994, 20966), (1562, 13342), (1906, 10934), (1988, 10483), (3124, 6671), (3812, 5467)]