21000908000

素因数分解:

$2^5\times 5^3\times {\mathrm{5250227}}^1$

素因数の和:5250252

約数の個数: 48

約数和(自身を含む): 51599240784

約数和(自身を除く): 30598332784

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, 5250227, 10500454, 21000908, 26251135, 42001816, 52502270, 84003632, 105004540, 131255675, 168007264, 210009080, 262511350, 420018160, 525022700, 656278375, 840036320, 1050045400, 1312556750, 2100090800, 2625113500, 4200181600, 5250227000, 10500454000, 21000908000]

約数ペア:

[(1, 21000908000), (2, 10500454000), (4, 5250227000), (5, 4200181600), (8, 2625113500), (10, 2100090800), (16, 1312556750), (20, 1050045400), (25, 840036320), (32, 656278375), (40, 525022700), (50, 420018160), (80, 262511350), (100, 210009080), (125, 168007264), (160, 131255675), (200, 105004540), (250, 84003632), (400, 52502270), (500, 42001816), (800, 26251135), (1000, 21000908), (2000, 10500454), (4000, 5250227)]