21888440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78173}}^1$

素因数の和:78191

約数の個数: 32

約数和(自身を含む): 56285280

約数和(自身を除く): 34396840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78173, 156346, 312692, 390865, 547211, 625384, 781730, 1094422, 1563460, 2188844, 2736055, 3126920, 4377688, 5472110, 10944220, 21888440]

約数ペア:

[(1, 21888440), (2, 10944220), (4, 5472110), (5, 4377688), (7, 3126920), (8, 2736055), (10, 2188844), (14, 1563460), (20, 1094422), (28, 781730), (35, 625384), (40, 547211), (56, 390865), (70, 312692), (140, 156346), (280, 78173)]