21253810

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{883}}^1$

素因数の和:1002

約数の個数: 32

約数和(自身を含む): 40098240

約数和(自身を除く): 18844430

約数列:

[1, 2, 5, 10, 29, 58, 83, 145, 166, 290, 415, 830, 883, 1766, 2407, 4415, 4814, 8830, 12035, 24070, 25607, 51214, 73289, 128035, 146578, 256070, 366445, 732890, 2125381, 4250762, 10626905, 21253810]

約数ペア:

[(1, 21253810), (2, 10626905), (5, 4250762), (10, 2125381), (29, 732890), (58, 366445), (83, 256070), (145, 146578), (166, 128035), (290, 73289), (415, 51214), (830, 25607), (883, 24070), (1766, 12035), (2407, 8830), (4415, 4814)]