21082851800

素因数分解:

$2^3\times 5^2\times {\mathrm{131}}^1\times {\mathrm{804689}}^1$

素因数の和:804836

約数の個数: 48

約数和(自身を含む): 49391872200

約数和(自身を除く): 28309020400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 131, 200, 262, 524, 655, 1048, 1310, 2620, 3275, 5240, 6550, 13100, 26200, 804689, 1609378, 3218756, 4023445, 6437512, 8046890, 16093780, 20117225, 32187560, 40234450, 80468900, 105414259, 160937800, 210828518, 421657036, 527071295, 843314072, 1054142590, 2108285180, 2635356475, 4216570360, 5270712950, 10541425900, 21082851800]

約数ペア:

[(1, 21082851800), (2, 10541425900), (4, 5270712950), (5, 4216570360), (8, 2635356475), (10, 2108285180), (20, 1054142590), (25, 843314072), (40, 527071295), (50, 421657036), (100, 210828518), (131, 160937800), (200, 105414259), (262, 80468900), (524, 40234450), (655, 32187560), (1048, 20117225), (1310, 16093780), (2620, 8046890), (3275, 6437512), (5240, 4023445), (6550, 3218756), (13100, 1609378), (26200, 804689)]