87908000

素因数分解:

$2^5\times 5^3\times {\mathrm{21977}}^1$

素因数の和:22002

約数の個数: 48

約数和(自身を含む): 215999784

約数和(自身を除く): 128091784

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, 21977, 43954, 87908, 109885, 175816, 219770, 351632, 439540, 549425, 703264, 879080, 1098850, 1758160, 2197700, 2747125, 3516320, 4395400, 5494250, 8790800, 10988500, 17581600, 21977000, 43954000, 87908000]

約数ペア:

[(1, 87908000), (2, 43954000), (4, 21977000), (5, 17581600), (8, 10988500), (10, 8790800), (16, 5494250), (20, 4395400), (25, 3516320), (32, 2747125), (40, 2197700), (50, 1758160), (80, 1098850), (100, 879080), (125, 703264), (160, 549425), (200, 439540), (250, 351632), (400, 219770), (500, 175816), (800, 109885), (1000, 87908), (2000, 43954), (4000, 21977)]