81780016

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{83791}}^1$

素因数の和:83860

約数の個数: 20

約数和(自身を含む): 161048224

約数和(自身を除く): 79268208

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 83791, 167582, 335164, 670328, 1340656, 5111251, 10222502, 20445004, 40890008, 81780016]

約数ペア:

[(1, 81780016), (2, 40890008), (4, 20445004), (8, 10222502), (16, 5111251), (61, 1340656), (122, 670328), (244, 335164), (488, 167582), (976, 83791)]