21351100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2399}}^1$

素因数の和:2502

約数の個数: 36

約数和(自身を含む): 46872000

約数和(自身を除く): 25520900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 2399, 4450, 4798, 8900, 9596, 11995, 23990, 47980, 59975, 119950, 213511, 239900, 427022, 854044, 1067555, 2135110, 4270220, 5337775, 10675550, 21351100]

約数ペア:

[(1, 21351100), (2, 10675550), (4, 5337775), (5, 4270220), (10, 2135110), (20, 1067555), (25, 854044), (50, 427022), (89, 239900), (100, 213511), (178, 119950), (356, 59975), (445, 47980), (890, 23990), (1780, 11995), (2225, 9596), (2399, 8900), (4450, 4798)]