21401135

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9080785

約数列:

[1, 5, 7, 35, 53, 83, 139, 265, 371, 415, 581, 695, 973, 1855, 2905, 4399, 4865, 7367, 11537, 21995, 30793, 36835, 51569, 57685, 80759, 153965, 257845, 403795, 611461, 3057305, 4280227, 21401135]

約数ペア:

[(1, 21401135), (5, 4280227), (7, 3057305), (35, 611461), (53, 403795), (83, 257845), (139, 153965), (265, 80759), (371, 57685), (415, 51569), (581, 36835), (695, 30793), (973, 21995), (1855, 11537), (2905, 7367), (4399, 4865)]