19891916

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:662

約数の個数: 36

約数和(自身を含む): 38856216

約数和(自身を除く): 18964300

約数列:

[1, 2, 4, 11, 22, 44, 73, 121, 146, 242, 292, 484, 563, 803, 1126, 1606, 2252, 3212, 6193, 8833, 12386, 17666, 24772, 35332, 41099, 68123, 82198, 136246, 164396, 272492, 452089, 904178, 1808356, 4972979, 9945958, 19891916]

約数ペア:

[(1, 19891916), (2, 9945958), (4, 4972979), (11, 1808356), (22, 904178), (44, 452089), (73, 272492), (121, 164396), (146, 136246), (242, 82198), (292, 68123), (484, 41099), (563, 35332), (803, 24772), (1126, 17666), (1606, 12386), (2252, 8833), (3212, 6193)]