21971348

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 46421760

約数和(自身を除く): 24450412

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 109, 161, 218, 313, 322, 436, 626, 644, 763, 1252, 1526, 2191, 2507, 3052, 4382, 5014, 7199, 8764, 10028, 14398, 17549, 28796, 34117, 35098, 50393, 68234, 70196, 100786, 136468, 201572, 238819, 477638, 784691, 955276, 1569382, 3138764, 5492837, 10985674, 21971348]

約数ペア:

[(1, 21971348), (2, 10985674), (4, 5492837), (7, 3138764), (14, 1569382), (23, 955276), (28, 784691), (46, 477638), (92, 238819), (109, 201572), (161, 136468), (218, 100786), (313, 70196), (322, 68234), (436, 50393), (626, 35098), (644, 34117), (763, 28796), (1252, 17549), (1526, 14398), (2191, 10028), (2507, 8764), (3052, 7199), (4382, 5014)]