21490512

素因数分解:

$2^4\times 3^1\times {\mathrm{139}}^1\times {\mathrm{3221}}^1$

素因数の和:3371

約数の個数: 40

約数和(自身を含む): 55933920

約数和(自身を除く): 34443408

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 139, 278, 417, 556, 834, 1112, 1668, 2224, 3221, 3336, 6442, 6672, 9663, 12884, 19326, 25768, 38652, 51536, 77304, 154608, 447719, 895438, 1343157, 1790876, 2686314, 3581752, 5372628, 7163504, 10745256, 21490512]

約数ペア:

[(1, 21490512), (2, 10745256), (3, 7163504), (4, 5372628), (6, 3581752), (8, 2686314), (12, 1790876), (16, 1343157), (24, 895438), (48, 447719), (139, 154608), (278, 77304), (417, 51536), (556, 38652), (834, 25768), (1112, 19326), (1668, 12884), (2224, 9663), (3221, 6672), (3336, 6442)]