21164752

素因数分解:

$2^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1871}}^1$

素因数の和:1987

約数の個数: 40

約数和(自身を含む): 47354112

約数和(自身を除く): 26189360

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 101, 112, 202, 404, 707, 808, 1414, 1616, 1871, 2828, 3742, 5656, 7484, 11312, 13097, 14968, 26194, 29936, 52388, 104776, 188971, 209552, 377942, 755884, 1322797, 1511768, 2645594, 3023536, 5291188, 10582376, 21164752]

約数ペア:

[(1, 21164752), (2, 10582376), (4, 5291188), (7, 3023536), (8, 2645594), (14, 1511768), (16, 1322797), (28, 755884), (56, 377942), (101, 209552), (112, 188971), (202, 104776), (404, 52388), (707, 29936), (808, 26194), (1414, 14968), (1616, 13097), (1871, 11312), (2828, 7484), (3742, 5656)]