28773820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 62203680

約数和(自身を除く): 33429860

約数列:

[1, 2, 4, 5, 10, 20, 67, 109, 134, 197, 218, 268, 335, 394, 436, 545, 670, 788, 985, 1090, 1340, 1970, 2180, 3940, 7303, 13199, 14606, 21473, 26398, 29212, 36515, 42946, 52796, 65995, 73030, 85892, 107365, 131990, 146060, 214730, 263980, 429460, 1438691, 2877382, 5754764, 7193455, 14386910, 28773820]

約数ペア:

[(1, 28773820), (2, 14386910), (4, 7193455), (5, 5754764), (10, 2877382), (20, 1438691), (67, 429460), (109, 263980), (134, 214730), (197, 146060), (218, 131990), (268, 107365), (335, 85892), (394, 73030), (436, 65995), (545, 52796), (670, 42946), (788, 36515), (985, 29212), (1090, 26398), (1340, 21473), (1970, 14606), (2180, 13199), (3940, 7303)]