81354940

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{49009}}^1$

素因数の和:49101

約数の個数: 24

約数和(自身を含む): 172907280

約数和(自身を除く): 91552340

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 49009, 98018, 196036, 245045, 490090, 980180, 4067747, 8135494, 16270988, 20338735, 40677470, 81354940]

約数ペア:

[(1, 81354940), (2, 40677470), (4, 20338735), (5, 16270988), (10, 8135494), (20, 4067747), (83, 980180), (166, 490090), (332, 245045), (415, 196036), (830, 98018), (1660, 49009)]