21130000

素因数分解:

$2^4\times 5^4\times {\mathrm{2113}}^1$

素因数の和:2141

約数の個数: 50

約数和(自身を含む): 51182054

約数和(自身を除く): 30052054

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2113, 2500, 4226, 5000, 8452, 10000, 10565, 16904, 21130, 33808, 42260, 52825, 84520, 105650, 169040, 211300, 264125, 422600, 528250, 845200, 1056500, 1320625, 2113000, 2641250, 4226000, 5282500, 10565000, 21130000]

約数ペア:

[(1, 21130000), (2, 10565000), (4, 5282500), (5, 4226000), (8, 2641250), (10, 2113000), (16, 1320625), (20, 1056500), (25, 845200), (40, 528250), (50, 422600), (80, 264125), (100, 211300), (125, 169040), (200, 105650), (250, 84520), (400, 52825), (500, 42260), (625, 33808), (1000, 21130), (1250, 16904), (2000, 10565), (2113, 10000), (2500, 8452), (4226, 5000)]