21316724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23136076

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 83, 143, 166, 286, 332, 449, 572, 898, 913, 1079, 1796, 1826, 2158, 3652, 4316, 4939, 5837, 9878, 11674, 11869, 19756, 23348, 23738, 37267, 47476, 64207, 74534, 128414, 149068, 256828, 409937, 484471, 819874, 968942, 1639748, 1937884, 5329181, 10658362, 21316724]

約数ペア:

[(1, 21316724), (2, 10658362), (4, 5329181), (11, 1937884), (13, 1639748), (22, 968942), (26, 819874), (44, 484471), (52, 409937), (83, 256828), (143, 149068), (166, 128414), (286, 74534), (332, 64207), (449, 47476), (572, 37267), (898, 23738), (913, 23348), (1079, 19756), (1796, 11869), (1826, 11674), (2158, 9878), (3652, 5837), (4316, 4939)]