19085872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1031}}^1$

素因数の和:1141

約数の個数: 40

約数和(自身を含む): 40309920

約数和(自身を除く): 21224048

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 1031, 1157, 1424, 2062, 2314, 4124, 4628, 8248, 9256, 13403, 16496, 18512, 26806, 53612, 91759, 107224, 183518, 214448, 367036, 734072, 1192867, 1468144, 2385734, 4771468, 9542936, 19085872]

約数ペア:

[(1, 19085872), (2, 9542936), (4, 4771468), (8, 2385734), (13, 1468144), (16, 1192867), (26, 734072), (52, 367036), (89, 214448), (104, 183518), (178, 107224), (208, 91759), (356, 53612), (712, 26806), (1031, 18512), (1157, 16496), (1424, 13403), (2062, 9256), (2314, 8248), (4124, 4628)]