20382400

素因数分解:

$2^6\times 5^2\times {\mathrm{12739}}^1$

素因数の和:12761

約数の個数: 42

約数和(自身を含む): 50157380

約数和(自身を除く): 29774980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12739, 25478, 50956, 63695, 101912, 127390, 203824, 254780, 318475, 407648, 509560, 636950, 815296, 1019120, 1273900, 2038240, 2547800, 4076480, 5095600, 10191200, 20382400]

約数ペア:

[(1, 20382400), (2, 10191200), (4, 5095600), (5, 4076480), (8, 2547800), (10, 2038240), (16, 1273900), (20, 1019120), (25, 815296), (32, 636950), (40, 509560), (50, 407648), (64, 318475), (80, 254780), (100, 203824), (160, 127390), (200, 101912), (320, 63695), (400, 50956), (800, 25478), (1600, 12739)]