19828000

素因数分解:

$2^5\times 5^3\times {\mathrm{4957}}^1$

素因数の和:4982

約数の個数: 48

約数和(自身を含む): 48727224

約数和(自身を除く): 28899224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 4957, 9914, 19828, 24785, 39656, 49570, 79312, 99140, 123925, 158624, 198280, 247850, 396560, 495700, 619625, 793120, 991400, 1239250, 1982800, 2478500, 3965600, 4957000, 9914000, 19828000]

約数ペア:

[(1, 19828000), (2, 9914000), (4, 4957000), (5, 3965600), (8, 2478500), (10, 1982800), (16, 1239250), (20, 991400), (25, 793120), (32, 619625), (40, 495700), (50, 396560), (80, 247850), (100, 198280), (125, 158624), (160, 123925), (200, 99140), (250, 79312), (400, 49570), (500, 39656), (800, 24785), (1000, 19828), (2000, 9914), (4000, 4957)]