20218772

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2399}}^1$

素因数の和:2460

約数の個数: 36

約数和(自身を含む): 42134400

約数和(自身を除く): 21915628

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 2399, 4214, 4798, 8428, 9596, 16793, 33586, 67172, 103157, 117551, 206314, 235102, 412628, 470204, 722099, 1444198, 2888396, 5054693, 10109386, 20218772]

約数ペア:

[(1, 20218772), (2, 10109386), (4, 5054693), (7, 2888396), (14, 1444198), (28, 722099), (43, 470204), (49, 412628), (86, 235102), (98, 206314), (172, 117551), (196, 103157), (301, 67172), (602, 33586), (1204, 16793), (2107, 9596), (2399, 8428), (4214, 4798)]