408288702940

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{51421751}}^1$

素因数の和:51422157

約数の個数: 24

約数和(自身を含む): 859566006432

約数和(自身を除く): 451277303492

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 51421751, 102843502, 205687004, 257108755, 514217510, 1028435020, 20414435147, 40828870294, 81657740588, 102072175735, 204144351470, 408288702940]

約数ペア:

[(1, 408288702940), (2, 204144351470), (4, 102072175735), (5, 81657740588), (10, 40828870294), (20, 20414435147), (397, 1028435020), (794, 514217510), (1588, 257108755), (1985, 205687004), (3970, 102843502), (7940, 51421751)]