25379804920

素因数分解:

$2^3\times 5^1\times {\mathrm{634495123}}^1$

素因数の和:634495134

約数の個数: 16

約数和(自身を含む): 57104561160

約数和(自身を除く): 31724756240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 634495123, 1268990246, 2537980492, 3172475615, 5075960984, 6344951230, 12689902460, 25379804920]

約数ペア:

[(1, 25379804920), (2, 12689902460), (4, 6344951230), (5, 5075960984), (8, 3172475615), (10, 2537980492), (20, 1268990246), (40, 634495123)]