21384196

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:352

約数の個数: 36

約数和(自身を含む): 40325040

約数和(自身を除く): 18940844

約数列:

[1, 2, 4, 19, 38, 59, 76, 118, 236, 251, 361, 502, 722, 1004, 1121, 1444, 2242, 4484, 4769, 9538, 14809, 19076, 21299, 29618, 42598, 59236, 85196, 90611, 181222, 281371, 362444, 562742, 1125484, 5346049, 10692098, 21384196]

約数ペア:

[(1, 21384196), (2, 10692098), (4, 5346049), (19, 1125484), (38, 562742), (59, 362444), (76, 281371), (118, 181222), (236, 90611), (251, 85196), (361, 59236), (502, 42598), (722, 29618), (1004, 21299), (1121, 19076), (1444, 14809), (2242, 9538), (4484, 4769)]