42890000

素因数分解:

$2^4\times 5^4\times {\mathrm{4289}}^1$

素因数の和:4317

約数の個数: 50

約数和(自身を含む): 103865190

約数和(自身を除く): 60975190

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, 2500, 4289, 5000, 8578, 10000, 17156, 21445, 34312, 42890, 68624, 85780, 107225, 171560, 214450, 343120, 428900, 536125, 857800, 1072250, 1715600, 2144500, 2680625, 4289000, 5361250, 8578000, 10722500, 21445000, 42890000]

約数ペア:

[(1, 42890000), (2, 21445000), (4, 10722500), (5, 8578000), (8, 5361250), (10, 4289000), (16, 2680625), (20, 2144500), (25, 1715600), (40, 1072250), (50, 857800), (80, 536125), (100, 428900), (125, 343120), (200, 214450), (250, 171560), (400, 107225), (500, 85780), (625, 68624), (1000, 42890), (1250, 34312), (2000, 21445), (2500, 17156), (4289, 10000), (5000, 8578)]