21299876

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2609}}^1$

素因数の和:2783

約数の個数: 24

約数和(自身を含む): 40413240

約数和(自身を除く): 19113364

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2609, 4082, 5218, 8164, 10436, 33917, 67834, 135668, 409613, 819226, 1638452, 5324969, 10649938, 21299876]

約数ペア:

[(1, 21299876), (2, 10649938), (4, 5324969), (13, 1638452), (26, 819226), (52, 409613), (157, 135668), (314, 67834), (628, 33917), (2041, 10436), (2609, 8164), (4082, 5218)]