20312847680

素因数分解:

$2^6\times 5^1\times {\mathrm{251}}^1\times {\mathrm{252899}}^1$

素因数の和:253167

約数の個数: 56

約数和(自身を含む): 48562869600

約数和(自身を除く): 28250021920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 251, 320, 502, 1004, 1255, 2008, 2510, 4016, 5020, 8032, 10040, 16064, 20080, 40160, 80320, 252899, 505798, 1011596, 1264495, 2023192, 2528990, 4046384, 5057980, 8092768, 10115960, 16185536, 20231920, 40463840, 63477649, 80927680, 126955298, 253910596, 317388245, 507821192, 634776490, 1015642384, 1269552980, 2031284768, 2539105960, 4062569536, 5078211920, 10156423840, 20312847680]

約数ペア:

[(1, 20312847680), (2, 10156423840), (4, 5078211920), (5, 4062569536), (8, 2539105960), (10, 2031284768), (16, 1269552980), (20, 1015642384), (32, 634776490), (40, 507821192), (64, 317388245), (80, 253910596), (160, 126955298), (251, 80927680), (320, 63477649), (502, 40463840), (1004, 20231920), (1255, 16185536), (2008, 10115960), (2510, 8092768), (4016, 5057980), (5020, 4046384), (8032, 2528990), (10040, 2023192), (16064, 1264495), (20080, 1011596), (40160, 505798), (80320, 252899)]