21528160

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{683}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 51193296

約数和(自身を除く): 29665136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 683, 788, 985, 1366, 1576, 1970, 2732, 3152, 3415, 3940, 5464, 6304, 6830, 7880, 10928, 13660, 15760, 21856, 27320, 31520, 54640, 109280, 134551, 269102, 538204, 672755, 1076408, 1345510, 2152816, 2691020, 4305632, 5382040, 10764080, 21528160]

約数ペア:

[(1, 21528160), (2, 10764080), (4, 5382040), (5, 4305632), (8, 2691020), (10, 2152816), (16, 1345510), (20, 1076408), (32, 672755), (40, 538204), (80, 269102), (160, 134551), (197, 109280), (394, 54640), (683, 31520), (788, 27320), (985, 21856), (1366, 15760), (1576, 13660), (1970, 10928), (2732, 7880), (3152, 6830), (3415, 6304), (3940, 5464)]