21698080

素因数分解:

$2^5\times 5^1\times {\mathrm{135613}}^1$

素因数の和:135628

約数の個数: 24

約数和(自身を含む): 51262092

約数和(自身を除く): 29564012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135613, 271226, 542452, 678065, 1084904, 1356130, 2169808, 2712260, 4339616, 5424520, 10849040, 21698080]

約数ペア:

[(1, 21698080), (2, 10849040), (4, 5424520), (5, 4339616), (8, 2712260), (10, 2169808), (16, 1356130), (20, 1084904), (32, 678065), (40, 542452), (80, 271226), (160, 135613)]