20293820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 44912448

約数和(自身を除く): 24618628

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 281, 314, 460, 562, 628, 785, 1124, 1405, 1570, 2810, 3140, 3611, 5620, 6463, 7222, 12926, 14444, 18055, 25852, 32315, 36110, 44117, 64630, 72220, 88234, 129260, 176468, 220585, 441170, 882340, 1014691, 2029382, 4058764, 5073455, 10146910, 20293820]

約数ペア:

[(1, 20293820), (2, 10146910), (4, 5073455), (5, 4058764), (10, 2029382), (20, 1014691), (23, 882340), (46, 441170), (92, 220585), (115, 176468), (157, 129260), (230, 88234), (281, 72220), (314, 64630), (460, 44117), (562, 36110), (628, 32315), (785, 25852), (1124, 18055), (1405, 14444), (1570, 12926), (2810, 7222), (3140, 6463), (3611, 5620)]