20857730

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1103}}^1$

素因数の和:1202

約数の個数: 32

約数和(自身を含む): 39426048

約数和(自身を除く): 18568318

約数列:

[1, 2, 5, 10, 31, 61, 62, 122, 155, 305, 310, 610, 1103, 1891, 2206, 3782, 5515, 9455, 11030, 18910, 34193, 67283, 68386, 134566, 170965, 336415, 341930, 672830, 2085773, 4171546, 10428865, 20857730]

約数ペア:

[(1, 20857730), (2, 10428865), (5, 4171546), (10, 2085773), (31, 672830), (61, 341930), (62, 336415), (122, 170965), (155, 134566), (305, 68386), (310, 67283), (610, 34193), (1103, 18910), (1891, 11030), (2206, 9455), (3782, 5515)]